Science On Top
The Australian Podcast putting Science on Top of the agenda

Man-made electromagnetic noise is affecting migratory birds. But it's not wi-fi, microwaves or any of the usual culprits - just good old fashioned AM radio.

US scientists have developed artificial DNA - X and Y base pairs - which then replicated with the normal G, A, T and C molecules when the cell divides. This could pave the way for new methods of developing drugs and other chemicals. Or Godzilla.

A study with mice involving exercise, electric shocks and drugs have given new insights into how memories are formed, and why you can't remember being a baby.

When bacteria can't sense other bacteria around them, they begin to mutate faster. If we could trick them into thinking they're not alone, we could slow down the development of antibacterial resistance.

Four months after India was declared polio-free, the World Health Organisation has declared the resurgence of polio a "public health emergency of international concern."

Direct download: SoT_0148.mp3
Category:general -- posted at: 11:53pm AEST

Microbes from lakes in the French Pyrenees thrive on the fungus that has been linked to a dramatic decline in amphibian populations.

A new spider species has been found in the Namibian desert, and it does cartwheels to escape predators.

Rats and mice show increased stress levels when handled by male researchers rather than women, potentially skewing study results.

The average height of British soldiers fighting in the First World War was 168cm. Today the average height for men of the same age is 178cm. A new study suggests that height change was not because of diet, but rather urbanisation.

Sea turtle hatchlings, trying to find their way to the ocean have been confused by well-lit resorts and apartment buildings. A new project, funded in part by fines from the 2010 Deepwater Horizon oil spill, aims to fix this problem with new LED lights.

After being first discovered in 2010 by a team in Russia, super-heavy element 117 (Ununseptium) was found again by researchers in Germany. The confirmation means Ununseptium could shortly find its way onto the periodic table as the heaviest element ever made.

Direct download: SoT_0147.mp3
Category:general -- posted at: 2:46pm AEST

Evolutionary biologist and author of Sex, Genes & Rock 'n' Roll Professor Rob Brooks joins us to talk beards, monogamy and evolution.

Beards seem to be popular now, but we may be approaching 'peak beard', where beards are so common they lose their novelty appeal.

Do babies cry at night to stop their parents having more babies? Evolutionary biologist David Haig thinks they may be unintentionally sabotaging their parents' sex lives.

A ten year, worldwide project has finally sequenced the Tsetse fly genome. The findings from this massive effort could help in the fight against sleeping sickness, which kills nearly 10,000 people a year.

Some dolphins use sea spongers as tools to help forage for food, and it appears to be affecting their diet.

The US Food and Drug Administration has approved a new test for human papillomavirus, but while it could one day replace a pap smear, it still requires a cervical sample.

Direct download: SoT_0146.mp3
Category:general -- posted at: 8:58pm AEST

The world's longest continuously running lab experiment, The Pitch Drop, finally drops for the ninth time.

Cephalotes ants can glide to nearby trees when they find themselves skydiving. Also they use their heads as shields.

The most Earth-like exoplanet yet has been discovered, just 10% bigger than our planet.

We all know malaria is spread by mosquitoes, but in 1995 in Taiwan there was an outbreak that spread throughout a hospital without any mosquito assistance.

Direct download: SoT_0145.mp3
Category:general -- posted at: 11:22pm AEST

Continental drift could have been started by a massive meteorite impact 3 billion years ago.

Fossilised daddy longlegs reveal the arachnids had an extra pair of eyes 305 million years ago. And weren't cute then, either.

A new study suggests that even if there was liquid water on the surface of Mars billions of years ago, there wasn't enough atmospheric pressure to keep it liquid for long.

The UK Government has stockpiled over £500m worth of the antiviral drug Tamiflu. A study now finds that the drug would have little to know effect on the spread of influenza or the duration of flu symptoms. According to medical journalist Ben Goldacre, this finding is symbolic of substantial transparency issues within the pharmaceutical industry.

Ten world-class violinists tested expensive 'Old Italians' - Stradivarius and del Gesu violins - against modern, much cheaper instruments. The modern instruments were overwhelmingly preferred.

Direct download: SoT_0144.mp3
Category:general -- posted at: 10:16pm AEST

We have six basic facial expressions, but computer software has shown we combine them to display hybrid emotions, like 'happily surprised' or 'angrily surprised'.

Scientists have long suspected that Saturn's sixth largest moon, Enceladus, held large amounts of water beneath its icy surface. But now gravity measurements have found a large ocean below the southern polar region.

Genetic modification could allow us to grow plants that are more easily broken down to make biofuels and paper.

Contrary to a lot of media reporting, rats might not be completely off the hook when it comes to spreading the Black Death.

On April 21st, NASA plans to crash a recent lunar probe, LADEE, into the moon.

Direct download: SoT_0143.mp3
Category:general -- posted at: 8:53pm AEST

A woman with a bone disorder has had her cranium replaced with a 3D printed one, and shows no sign of rejection.

Skeletons unearthed last year from a burial ground in London may suggest that the Black Death plague was spread via the air, not tick bites from rats.

The rubber hand illusion is an old trick where your brain is fooled into thinking a rubber hand is your own. Psychologists in Italy have now made people believe the hands were made of marble. Because Italy.

Could the Permian extinction, the largest mass-extinction on Earth, have been caused by the farts of single-celled microbes?

Obakata, lead researcher in the STAP papers, found guilty of fabricating data. And an acupuncture trial gets undue media attention.

Direct download: SoT_0142.mp3
Category:general -- posted at: 9:27pm AEST

Giant pythons in Florida's everglades can navigate vast distances, and we're not sure how.

For the first time ever, an asteroid in our solar system has been discovered with a ring system.

Dark chocolate is good for you, but it's the bacteria in your gut that make it so.

Astronomers have discovered an icy body with an orbit so big it never gets closer than 12 billion kilometers from the Sun!

Direct download: SoT_0141.mp3
Category:general -- posted at: 3:18pm AEST

The most comprehensive infrared search of our skies has found no trace of "Planet X", the mythical giant planet on the edge of our solar system.

The troublesome Western Corn Rootworm is developing a resistance to the genetically modified corn designed to thwart it.

British archaeologists have found what they say is the world's oldest complete example of a human being with metastatic cancer.

Tracing human migration across the pacific 3,000 years ago is tricky, but tracing the chickens they brought with them might be a better method.

Climate For Change is a exciting grass-roots activism movement starting up in Melbourne, Australia. Katerina Gaita joins us to explain what they're doing and how you can be part of it.

Direct download: SoT_0140.mp3
Category:general -- posted at: 9:49am AEST

Last Monday, astronomers announced what has been described as "the biggest thing since dark energy" - detection of gravitational waves from the afterglow of the big bang. We got astronomer Dr. Alan Duffy from Swinburne University on to tell us what that means, and what it says about the very early stages of our Universe.

Direct download: SoT_Special_013.mp3
Category:general -- posted at: 1:46pm AEST

More controversy over stress-induced stem cells, as co-authors call for the retractions of the papers.

An aluminium suit could enable divers to travel to depths of 305 meters, move around and collect samples.

A giant virus has been discovered in 30,000 year old Siberian permafrost. It's big and it eats amoebas.

An Australian team is working on a project to clear space junk with a powerful ground-based laser.

A study of how men and women perceive each other's mathematics skills suggests that both men and women unconsciously - and wrongly - believe women are 'bad' at maths.

Direct download: SoT_0139.mp3
Category:general -- posted at: 4:57pm AEST

More studies finding no evidence of 'wind turbine syndrome', plus a discussion on dealing with climate change deniers.

Could enough wind turbines reduce the force of hurricanes? Maybe, but it would need A LOT of turbines.

In 2011 a 6 - 9 million year old whale graveyard was discovered at Cerro Ballena (Whale Hill) in Chile. But with time running out, researchers turned to a digital method of preserving the environmental context in 3D.

A thin, stretchy, electric membrane moulded to a patient's heart could be the next stage in health monitoring.

Direct download: SoT_0138.mp3
Category:general -- posted at: 11:29am AEST

Vaccines might not need to be kept cold to the extent previously thought. This could make vaccinations in third world countries cheaper and easier.

The oldest crystal on Earth has been dated and found to be 4.4 billion years old. This means the Earth had developed a crust very early on, perhaps only a few hundred million years after formation.

What's the best way to count whale populations? It could be from space.

To learn about how humans and dogs process sounds and emotions, researchers had to train dogs to lie still in an fMRI machine. Which is amazingly cute.

The fourth new species of an Australian marsupial with bizarre sexual behaviour has been discovered. These rodent-like animals actually disintegrate during their marathon sex-fests.

Direct download: SoT_0137.mp3
Category:general -- posted at: 11:22am AEST

A thorough investigation of the 'jelly doughnut shaped rock', known by NASA as Pinnacle Island, confirms it isn't an alien fungus, it isn't a meteorite fragment, it's just a chipped bit of rock.

Doubts have emerged about the radical stem cell breakthrough that suggested acid or other stress could turn mature cells into stem cells. The jury's still out on this.

Scientists have developed a detailed model of curly hair, which could give insights into the behaviours of all curved rods. Most importantly, headphone cables.

An artificial hand wired directly into the nerves of an amputee gives the sensation of touch. The recipient could tell if objects were hard or soft, and even their shapes.

A trace fossil gives clues how dinosaurs peed. We don't know which dinosaur, but we do know it was a lot of pee.

The Burgess Shale is famous for its large collection of varied soft-tissue fossils, and another similar site has been found nearby.

A 248 million year old fossil of a dinosaur giving birth has been found and raises questions about whether ancient sea monsters gave birth on land.

Direct download: SoT_0136.mp3
Category:general -- posted at: 9:44pm AEST

Stephen Hawking has some new thoughts on black holes, but he's not saying they don't exist.

For a few weeks, weather uncovered the footprints of five prehistoric humans. And then washed them away again.

There's a leech that can survive being submerged in liquid nitrogen for 24 hours.

Astronomers have discovered what could be one of the oldest stars, formed from the exploded remains of one of the first stars.

The crippled Kepler Space Telescope has been resurrected, with an ingenious solution that restores part of its function.

Direct download: SoT_0135.mp3
Category:general -- posted at: 10:50am AEST

A new method of turning adult cells into pluripotent stem cells is discovered. According to the paper, simply bathing cells in acid could be cause mature cells to revert to stem cells that could become any cell in the body.

Heart researchers in the UK have managed to turn stem cells into heart cells, that actually beat in petri dishes.

NASA plans to create the coldest spot in the universe on board the International Space Station. They're talking 100 pico-Kelvin, which is one ten billionth of a degree above absolute zero.

Antioxidants may worsen lung cancer. Swedish scientists have determined why two antioxidants speed up the development of tumours.

By training wallabies to 'play the pokies', an Australian team has discovered that wallabies see colours more like dogs than fellow marsupials.

Direct download: SoT_0134.mp3
Category:general -- posted at: 9:07pm AEST

Jelly donut shaped rock surprises NASA, then gets them sued.

Tracking dogs by GPS may give clues to pack structure, but probably not.

West Australia's shark cull begins, the same week that a report finds 1/4 of sharks and rays are threatened with extinction.

Men supposedly forget more than women do, but the study has big issues.

Direct download: SoT_0133.mp3
Category:general -- posted at: 8:36pm AEST

After nearly 11 years, the Rosetta comet-chasing spacecraft has awoken and is preparing for an ambitious mission.

A new hypothesis for 'lactose persistence' - why most humans can still drink milk into adulthood.

Why do sloths climb down from their trees to poo on the ground? It could be because of moths.

China is getting into genetic modification and cloning on an 'industrial scale'. That's a lot of pigs.

Biotechnology company Illumina has announced a machine that can sequence the human genome for under US$1,000.

Personal genetics company 23andMe has run afoul of the FDA, but are they really that bad?

Direct download: SoT_0132.mp3
Category:general -- posted at: 5:51pm AEST

2013 was Australia's hottest year on record, and the sixth hottest globally. Plus the 'polar vortex' hitting North America, and one of Australia's "most significant heatwaves". And the effect of "C2O" on jumping sea snails.

Physics professors have searched the internet for evidence of time travel, and didn't find any.

Are dolphins getting high on a toxin secreted by puffer fish? Truth is we really don't know.

A new Staph vaccine shows promise in rabbits, but might not work as well in humans.

A species of sea anemone has been found on the underside of Antarctica's ice sheets. They are the only marine animals known to live embedded in the ice, and no one is sure how they survive.

When seven-year-old Sophie wrote a letter to CSIRO, Australia's peak governmental science organisation, she wanted to know what research was being done on dragons. The CSIRO responded beautifully, first apologising for the lack of dragon-research and then making her a titanium dragon with a 3D printer.

Direct download: SoT_0131.mp3
Category:general -- posted at: 11:47am AEST

The turn of the millennium has brought a new dimension to the Space Age - one that was undreamed of only a few years ago. Thanks to a combination of visionary entrepreneurs and an ailing Russian spaceflight programme, space tourism is now a reality that is set to take off dramatically in the near future. In this entertaining and fully-illustrated talk, Professor Fred Watson outlines what we might see as space tourism evolves into a mainstream branch of the industry. He argues that the new venture is not merely an expensive diversion for the very rich, but a necessary step in humankind's emergence as a space-faring species.

Direct download: SoT_Special_012_Space_Tourism.mp3
Category:general -- posted at: 8:00pm AEST

Ed, Shayne, Lucas and Dyani look back on the big science stories from 2013. From pubic lice to meteor impacts, crowd-funding to HIV cures, we revisit some of our favourite news items.

For all the stories we mention, check out the show notes for this episode at scienceontop.com/130

Direct download: SoT_0130.mp3
Category:general -- posted at: 7:51pm AEST

Dr. David Hawkes' Name The Virus crowdfunding project is a huge success - and it got him a spot on national TV. But is crowdfunding just a passing fad?

Comet ISON was billed as the "Comet of a Lifetime", but was more fizzle than sizzle. But even though it burned up in the sun, it's mysterious approach could give astronomers valuable insights into comet behaviour.

An amazing result from a mice experiment in Atlanta suggests mice can 'inherit' memories from their fathers, and even their grandfathers.

Researchers have successfully sequenced the oldest known human DNA - 400,000 years old - and uncovered further mystery about human ancestory.

The male contraceptive pill could be a step closer thanks to an unusual approach taken by Australian scientists. Instead of looking at hormonally controlling sperm production, they are looking at controlling the release of sperm at orgasm.

China has launched Chang'E 3, a probe with a rover set to land on the Moon. If successful, China will be the third country ever to land a craft on the moon.

Direct download: SoT_0129.mp3
Category:general -- posted at: 11:26pm AEST

Jo Benhamu joins us to talk about a new trial she's conducting to improve radiotherapy for prostate cancer.

More progress resurrecting the extinct gastric brooding frog.

Scientists in Spain have received funding to test whether an extinct mountain goat can be cloned from preserved cells.

The temperature of the lab could potentially skew results of mice-studies. The mouse immune system is stronger at warmer temperatures than most labs are kept at.

NASA has plans to send plants to the moon, to grow in a 3D printed miniature greenhouse.

We pay tribute to Frederick Sanger, a two-time Nobel Prize winner and the 'father of genomics'.

Direct download: SoT_0128.mp3
Category: -- posted at: 9:16pm AEST

Launch of the MAVEN probe to Mars, to investigate what happened to the red planet's atmosphere.

Richard Lenski's long-term evolution experiment shows no sign of stopping. One of the longest continously-running scientific experiments demonstrates that bacteria evolves and at an increasing rate.

The 'clean-rooms' where spacecraft are built are  the most sterile places we can make. But a new species of bacteria has been found in two such clean-rooms - not exactly thriving, but not dead either...

It's well established that modern dogs are an evolutionary off-shoot of wolves, but there's a lot of debate about when and where they branched off. With theories suggesting China, Europe and the Middle East as being the sites of the separation, it's an ongoing question.

Direct download: SoT_0127.mp3
Category:general -- posted at: 3:54pm AEST

Blinky the crab is a mutant freak. It has three eyes instead of two, and an antenna-like structure on its head. But the reasons for Blinky's deformities are a bit of a mystery.

Researchers have linked specific human actions to changes in global warming. They found warming slowed down in the nineties, which they believe can be partly explained by the 1987 ban on CFCs. They also found that warming slowed during the Great Depression.

New-born babies deliberately suppress their own immune systems to allow beneficial microbes to colonise their gut.

Asteroids 'dead' rocks in space. But recent images have shown one to have tails - six of them!

A fossil of a 'coupling' 165m years ago shows two insects loving each other in a very special way. The fossil seems to indicate that the genitals of modern froghoppers are the same as their ancestors', but their favourite sexual position may have changed. 

Direct download: SoT_0126.mp3
Category:general -- posted at: 3:38pm AEST

The RAVE (Radial Velocity Experiment) study finds that our galaxy, the Milky Way, is fluttering like a flag. Sort of wobbling.

From the 1960s to the 1990s, adult elphants were culled extensively in South Africa. It was feared that if there were too many elephants they would destroy the habitat. A recent study of the young elephants that were spared shows substantial social and psychological trauma, decades later.

Astronomers have crunched some heavy maths and statistically, there could be as many as 20 billion Earth-like exoplanets in our galaxy.

A study of tail-wagging dogs finds that a dog's heart rate and anxiety levels increase when it sees another dog wagging its tail to the left

With India's successful launch of the Mangalyaan probe to Mars, some people are suggesting this could be the beginning of an India-China 'Asian space race'. Others are criticising the AU$77m project in light of India's widespread poverty.

Direct download: SoT_0125.mp3
Category:general -- posted at: 10:54pm AEST

Name The Virus is a crowdfunding initiative to develop new viral vectors to help understand the brain and its disease.

A species of South African dung beetle has given up the ability to fly to instead gallop across the sand grasping bits of poo.

Why do some people have blue eyes, or big noses, or wide mouths? Some regions of the genome previously thought of as 'junk DNA' control the activity of genes for facial features.

The practice of recording bird calls and replaying them to lure birds into view is frowned upon by many bird-watchers, but some people still do it. A new study shows that it can stress birds out and harm them.

The strains of human papillomavirus that most commonly affect black women are different from those targeted by the HPV vaccine.

Direct download: SoT_0124.mp3
Category:general -- posted at: 2:14pm AEST

A new study shows that while the brain is asleep, it washes away buildups of wastes and toxins.

In the early 90s, about 60,000 jellyfish were born in space. When they came back to Earth, things didn't quite work out.

A test of alleged yeti samples uncovers an extinct polar bear/brown bear hybrid.

A new law of biology: all mammals pee for about 21 seconds. Yes, a team of scientists walked around a zoo with a stopwatch.

A new strain of Clostridium botulinum, the bacteria that produces one of the deadliest neurotoxins we know of, has been discovered. Researchers have taken the unusual precaution of whithholding key details of the bacteria's genome.

Direct download: SoT_0123.mp3
Category:general -- posted at: 1:58pm AEST

The Nobel Prize in Physiology or Medicine 2013 was awarded jointly to James E. Rothman, Randy W. Schekman and Thomas C. Südhof ”for their discoveries of machinery regulating vesicle traffic, a major transport system in our cells”.

The Nobel Prize in Physics 2013 was awarded jointly to François Englert and Peter W. Higgs “for the theoretical discovery of a mechanism that contributes to our understanding of the origin of mass of subatomic particles, and which recently was confirmed through the discovery of the predicted fundamental particle, by the ATLAS and CMS experiments at CERN’s Large Hadron Collider”.

The Nobel Prize in Chemistry 2013 was awarded jointly to Martin Karplus, Michael Levitt and Arieh Warshel ”for the development of multiscale models for complex chemical systems”.

A new study shows that even without training, elephants can understand pointing.

A protein found in the venom of the Chinese red headed centipede could be a total painkiller.

Direct download: SoT_0122.mp3
Category:general -- posted at: 7:21pm AEST

In rutting season, stags roar a lot. Deep roars - the deeper the better for warding off competition. And that could have something to do with the human larynx, which is lower than most other animals. It could also explain why Barry White's voice is so popular with women.

New research from the UK shows that diesel fumes are confusing bees and preventing them from finding flowers. But the fumes aren't affecting the bees directly, rather they change the smell of flowers.

A study of ballerinas suggests that with extensive training they change their brains to allow them to spin without being sick.

South Korean scientists have engineered bacteria that produce short-chain alkanes, key components of gasoline.

Direct download: SoT_0121.mp3
Category:general -- posted at: 9:40pm AEST

Researchers have discovered the mechanism behind the link between blue-green algae and ALS, a type of motor neuron disease also known as Lou Gehrig's disease. Dr. Rachael Dunlop is lead author of the paper, and she joins us to talk algae, Guam, fruit bats and General "Stormin' Norman" Schwarzkopf.

The foramen magnum is the hole in the base of your skull that the spinal cord passes through on its way to the brain. But it's position can tell a lot about how you - and your ancestors - walked.

Bacteria can absorb fragments of DNA from the environment around them. This ability could be a previously ignored mechanism of evolution.

A devastating earthquake in Pakistan created a new 'island', exciting geologists around the world. And it's already been littered with trash.

A company in the UK has developed a plant that produces both tomatoes AND potatoes. So of course, they’ve called it the "TomTato".

Direct download: SoT_0120.mp3
Category:general -- posted at: 9:01am AEST

A new form of exposure therapy could treat people's phobias - while they sleep.

Can pasta make you drunk? A case study of a man with auto-brewery syndrome.

Curiosity rover finds much less methane than expected, crushing hopes of finding life on Mars.

A British team claims to have found evidence of extra-terrestrial life. They haven't.

The life story of a blue whale has been mapped, with information from an unlikely source.

Direct download: SoT_0119.mp3
Category:general -- posted at: 9:01pm AEST

The Ig Nobel Prizes honour achievements that first make us laugh, then make us think. We take a look atthis year’s winners: from dung beetles to penis amputations!

MEDICINE PRIZE
A team of scientists from Japan, China and the UK for assessing the effect of listening to opera, on heart transplant patients who are mice.
Classical music affects heart transplants

PSYCHOLOGY PRIZE
Scientists from France, the USA, UK, The Netherlands, and Poland for confirming, by experiment, that people who think they are drunk also think they are attractive.
“Beauty in the eyes of the beer holder” – people who think they’re drunk, think they’re hot

JOINT PRIZE IN BIOLOGY AND ASTRONOMY
A team from Australia, Sweden, Germany, South Africa and the UK for discovering that when dung beetles get lost, they can navigate their way home by looking at the Milky Way.
Dung Beetles Watch the Galaxy (That’s How They Roll)

ARCHAEOLOGY PRIZE
Americans Brian Crandall and Peter Stahl, for parboiling a dead shrew, and then swallowing the shrew without chewing, and then carefully examining everything excreted during subsequent days — all so they could see which bones would dissolve inside the human digestive system, and which bones would not.
Missing morsels – chewing over the results of eating a shrew

SAFETY ENGINEERING PRIZE
The late Gustano Pizzo for inventing an electro-mechanical system to trap airplane hijackers — the system drops a hijacker through trap doors, seals him into a package, then drops the encapsulated hijacker through the airplane’s specially-installed bomb bay doors, whence he parachutes to earth, where police, having been alerted by radio, await his arrival.
IgNobels, 2013: The Safety Engineering Prize!

PHYSICS PRIZE
Scientists from Italy, UK, Denmark, Switzerland, Russia, and France for discovering that some people would be physically capable of running across the surface of a pond — if those people and that pond were on the moon.
Could humans run on water?

CHEMISTRY PRIZE
A team of Japanese scientists for for discovering that the biochemical process by which onions make people cry is even more complicated than scientists previously realised.
GM could hold back the tears

PEACE PRIZE
Alexander Lukashenko, president of Belarus, for making it illegal to applaud in public, AND to the Belarus State Police, for arresting a one-armed man for applauding.
What is the sound of one hand clapping?

PROBABILITY PRIZE
Scientists from the UK, the Netherlands and Canada for making two related discoveries: First, that the longer a cow has been lying down, the more likely that cow will soon stand up; and Second, that once a cow stands up, you cannot easily predict how soon that cow will lie down again.
Why do cows have their ups and downs?

PUBLIC HEALTH PRIZE
Seven doctors in Thailand for the medical techniques described in their report “Surgical Management of an Epidemic of Penile Amputations in Siam” — techniques which they recommend, except in cases where the amputated penis had been partially eaten by a duck.
Reattachment of the penis. Unless it was first eaten by a duck.

Direct download: SoT_0118.mp3
Category:general -- posted at: 10:34pm AEST

On Friday 13 September 2013, Dr. Pamela Gay gave a talk at Swinburne University in Melbourne, Australia about CosmoQuest.org and the need for citizen science. There were also some questions about black holes and supernovae.

Our thanks to Swinburne University for hosting this lecture, and our apologies for the audio quality.

Direct download: SoT_Special_010.mp3
Category:general -- posted at: 11:10pm AEST

Fish expert Phil Kent joins us to talk more about the pacu, the alleged testicle-eating fish allegedly found off the alleged coast of Denmark.

University of Washington researchers have sent a signal from one scientist's brain over the internet to control the hand motions of another researcher. The NSA is paying close attention.

NASA has discovered one of the largest canyons in the world underneath the ice sheet that covers most of Greenland. The ice sheet is 3km thick in some parts, and scientists are surprised it hasn't worn away the canyon that was carved out four million years ago.

The conventional understanding that babies are born sterile is being overturned in the face of growing evidence that mothers 'seed' their fetuses with bacteria from early on in the pregnancy.

Babies can learn words while in the womb, and can remember those words after being born. By monitoring the brain waves of newborns, scientists have discovered the babies recognised 'pseudowords' they heard in the womb.

A fish experiment suggests that leadership is an innate quality. 'Leader' fish could be taught to follow other fish, but 'follower' fish struggled to become leaders. Fish have more personality than you might think.

Direct download: SoT_0117.mp3
Category:general -- posted at: 11:07am AEST

In a town with no previously recorded earthquakes, more than a hundred were recorded in one year. It's thought they were triggered by the disposal of waste water from fracking.

A new world record has been set for the smallest sequenced genome, and it belongs to a symbiotic bacteria living in leafhoppers.

Mother gibbons teach their daughters to sing, using a kind of 'baby talk'.

And ancient 'bog body' has been found with the skin intact. The body may be that of a king, killed in a ritual sacrifice. Because axes.

'Chronic excreters' could be the big obstacle preventing the global eradication of Polio.

A scientist jokes about a testicle-eating fish, and cable news anchors panic. And giggle.

Direct download: SoT_0116.mp3
Category:general -- posted at: 9:20am AEST

Mighty Maggots v Flesh Nom Bugs was a Pozible campaign that raised $9,970 for a trial. The trial aims to assess the ability of maggots to improve the rate of healing for people with Bairnsdale Ulcer lesions.

A new malaria vaccine has a 100% success rate in a small study. While promising, there are a lot of obstacles that need to be dealt with before this could be a viable Real World treatment.

The Tokyo Electric Power Company (TEPCO) has admitted that radioactive water has been leaking from the crippled Fukushima nuclear plant into the Pacific Ocean.

A material inspired by the cactus plant cleans tiny particles of oil from water.

100,000 adventurous people have signed up for a one-way trip to Mars. But did they read the timeline before signing on the dotted line?

Direct download: SoT_0115.mp3
Category:general -- posted at: 2:19pm AEST

Scientists have made "teeth-like structures" from stem cells generated from urine.

Mark Post, a Dutch researcher has made a hamburger from cow muscle grown in a lab. The Cultured Beef was cooked at a PR event in London and tastes "close to meat".

Brochosomes are tiny 'soccer-ball' structures secreted by leafhoppers that protect them from rain, spider silk and... their own waste.

A new technique developed by the CSIRO uses X-Rays to find gold in ore samples.

Fewer boys than girls were born in the months after the huge earthquake struck Japan in March 2011.

Direct download: SoT_0114.mp3
Category:general -- posted at: 4:49pm AEST

Dr. Pamela Gay is an astronomer and assistant research professor at Southern Illinois University, Edwardsville. She is the co-host of AstronomyCast, one of the longest running astronomy podcasts and Project Director for CosmoQuest.org. CosmoQuest is a non-profit organisation trying to engage people in both learning and doing science.

In this conversation we talk about her research on variable stars, as well as her involvement in citizen science and amateur astronomy. We discuss science education and funding, how AstronomyCast began and Pamela's inspirations.

You can find Pamela at her blog, StarStryder.com

You can learn more about CosmoQuest at CosmoQuest.org

You can listen to AstronomyCast at AstronomyCast.com

Direct download: SoT_Special_009_-_Dr._Pamela_Gay.mp3
Category:general -- posted at: 5:22pm AEST

It was thought that the many eyes on a peacock's tail feathers were what impressed peahens. But a new - and really cool! - study suggests that when it comes to wooing peahens, size does matter. It's not the number of the eyes, but the width of the tail.

Do dolphins use names? Well, sort of. They may use names to refer to themselves, but we don't know if they use names to refer to each other.

Scientists at MIT have developed a technique to insert false memories into mice

Three new studies have uncovered the genetic mechanism which controls regeneration in flatworms.

Researchers at the University of Tokyo say they have created electronics thin and flexible enough to be considered “imperceptible.” Their first prototype, a touch sensor, is 30 times lighter than printer paper and one-fifth the thickness of sandwich wrap.

Direct download: SoT_0113.mp3
Category:general -- posted at: 2:02pm AEST

The iKnife knows when it's cutting through healthy tissue or cancerous tissue during surgery. In 91 tests, it correctly identified the tissue every time, and in less than a second.

Chimpanzees and orangutans can use 'autobiographical memory' - previously thought to be unique to humans. In a series of tests, the apes were able to accurately recall an event that happened three years prior.

Genetecists may have found a way to switch off the rogue chromosome that causes Down's syndrome. 

The discovery of two giant viruses could mean an entirely new kingdom of life. More than 93% of their genes are unknown and not on any existing database.

Robert Hooke's Micrographia is available as a free e-book thanks to Project Gutenberg. Also check the Wikipedia page.

The 2013 NZ Skeptics Conference will be held in Wellington from the 6th to the 8th of September. Great speakers like astronomer Dr. Pamela Gay, climate scientist Professor Martin Manning, microbiologist Dr. Siouxsie Wiles and many more.

Direct download: SoT_0112.mp3
Category:general -- posted at: 10:33pm AEST

The Kepler spacecraft has found 134 confirmed planets outside our solar system and another 3,277 unconfirmed candidates. But has its time run out? NASA scientists are planning one last ditch effort to rescue the space telescope.

Meanwhile Hubble has analysed a planet 63 light years away and found it's a deep blue colour! Also, it's big and moving really really fast.

Lucas has found a gravity simulator that lets you build solar systems and watch as objects of different mass interact. It's mesmerising!

A look back at some old Hubble photographs led planetary astronomer Mike Showalter to discover a new moon orbiting Neptune.

The planarian is a simple flatworm, which can regrow its head after decapitation. But a recent experiment suggests they might be able to keep their memories from before the decapitation!

Direct download: SoT_0111.mp3
Category:general -- posted at: 10:27pm AEST

Human head transplants - technically maybe, but not really.

Did scientists create a human liver from stem cells? Sort of, but not really.

A bone marrow transplant cures two men of HIV - actually yes, but don't get your hopes up.

Beware the toad with the weaponised moustache!

Guillemot eggs clean themselves.

Pluto's moons get official names, snubbing Stephen Colbert.

Direct download: SoT_0110.mp3
Category:general -- posted at: 8:28am AEST

Shockwave from Russian meteor circled the globe twice

Russian rocket crashes shortly after launch

Global warming could be helping the spread of brain-eating amoebas

Why routine autopsies should be the norm, not the exception

A corn-eating pest thwarts farmers, but the bacteria makes them do it

Scientists have sequenced the genome of an ancient horse

Dopamine: why chocolate brownies are like cocaine

Torch that runs on body heat invented by 15-year-old

Direct download: SoT_0109.mp3
Category:general -- posted at: 10:54am AEST

Why naked mole rats don’t get cancer

Thinking of home makes it harder to learn a foreign language

Your vegetables are 'alive' up to a week after harvest

Being bitten by a komodo dragon: not as bad as you thought, but still pretty bad

Unlocking the parasitic secrets of 822 year old poo

Unsurprisingly, 1 billion-year-old water tastes "terrible"

Direct download: SoT_0108.mp3
Category:general -- posted at: 9:29pm AEST

Temperatures on Mars rise and fall twice a day

New phylum of bacteria discovered

Ancient armoured fish had abs

Leprosy from medieval knights is much the same as modern-day leprosy

Supreme Court rules on human-gene patents

Direct download: SoT_0107.mp3
Category:general -- posted at: 11:49am AEST

Australian Bird Moves Like Jagger and Sounds Like Space Invaders

Comet Lovejoy flies into Sun to reveal solar secrets

Australian squid eat sperm for better bodies and babies

Growing Left, Growing Right- why your left is different to your right

Direct download: SoT_0106.mp3
Category:general -- posted at: 8:50am AEST

400 Year old frozen plants get thawed out and revived. A Russian scientist claims to have found liquid blood in a 10,000 year old woolly mammoth carcass. The iron in beads worn by pre-Iron Age Egyptians came from meteorites. 1 in 13 museum visitors have 'ape-like' feet. An old theory about the evolution of the turtle's shell gets some supporting evidence. And a new therapy for schizophrenics shows promise.

Direct download: SoT_0105.mp3
Category:general -- posted at: 2:26pm AEST

Vitamin C kills tuberculosis in an accidental discovery. Why penguins can swim but not fly. A Neanderthal tooth gives a clue about the history of breastfeeding. The pathogen that caused the Irish Famine gets its genome sequenced. Our guts are full of bacteria, and even more viruses. The 'top ten' new species discovered in 2012. Cockroaches are evolving to avoid our traps.

More show notes at http://scienceontop.com/104

Direct download: SoT_0104.mp3
Category:general -- posted at: 10:44pm AEST

UN says insects are the food of the future. Underground water reservoir untouched for over a billion years. Stem cells created with cloning technique. Plan to monitor endangered ecosystems, not just animals. Egyptians got it on more in Summer, and the co-evolution of humans and dogs.

More show notes at http://scienceontop.com/103

Direct download: SoT_0103.mp3
Category:general -- posted at: 8:45am AEST

One third of all US honeybee colonies died last Winter. A protein in breast milk can help fight antibiotic-resistant bacteria. Plants talk to each other through a fungus. Some words may have survived with little changes for 15,000 years.

More show notes at http://scienceontop.com/102

Direct download: SoT_0102.mp3
Category:general -- posted at: 8:31am AEST

Solar powered plane completes the first leg of its trans-American trip. A Russian scientist claims to have found meterorites from the Tunguska event of 1908. A blood test could determine if you're going to get Alzheimer's disease - but would you want to know? Newly developed nanosheets soak up oil spills. And the 6" skeleton named Ata isn't as alien as it looks.

Direct download: SoT_0101.mp3
Category:general -- posted at: 9:54am AEST

The unborn sharks that eat their brothers and sisters. A fish that uses gestures. The ambiguity of language and the seven misused science words. AquAdvantage salmon, the first transgenic animal created for consumption, being tested by the FDA. Traces of supernovae found in ocean bacteria.

Direct download: SoT_0100.mp3
Category:general -- posted at: 9:49am AEST

Can we innoculate babies with 'good' bacteria to ward of bad bacteria? An ugly, unpalatable living fossil fish gives clues about the origins of limbs. A 'nano-suit' could protect living specimens in scanning electron microscopes. At what point does a baby become conscious? And more evidence suggests island dwarfism is behind the 'hobbit' remains discovered on the island of Flores in Indonesia.

Direct download: SoT_0099.mp3
Category:general -- posted at: 5:00pm AEST

Data collected on the ISS gives clues about dark matter. New analysis fo data from a soviet balloon probe suggests it encountered a rain shower on Venus. Iceman Otzi had bad teeth. How eating red meat could lead to heart attacks. And can a new take on an Old Wive's Tale be the answer to bed bug infestations?

Direct download: SoT_0098.mp3
Category:general -- posted at: 8:32am AEST

Obama announces brain-mapping plan. Scientists decode dreams with brain scans. The active ingredient in magic mushrooms could treat severe depression, but conducting trials is a legal nightmare. A turtle believed extinct for decades never really existed. How nerve cells generate energy. Buzz Aldrin's toothbrush, and other space memorabillia, up for auction. And a new species of giant tarantula has been discovered and is "pretty", venomous, and the size of your face.

Direct download: SoT_0097.mp3
Category:general -- posted at: 12:18pm AEST

Henrietta Lacks's immortal cancer cells, and the ethical controversy surrounding them.

An unusual virus could be the source of a mysterious form of hepatitis that causes liver failure in most horses.

If you thought mating in humans was complicated, spare a thought for the protozoan Tetrahymena thermophila, with its seven sexes!

Could the mysterious 'fairy circles' in Africa be the result of termites, rather than alien landing pads?

Direct download: SoT_0096.mp3
Category:general -- posted at: 1:25pm AEST

Voyager 1 has left the solar system. Or has it? Yes. And No. Sort of.

The Great Roller Derby Bacteria Swap

Three-person IVF could prevent mitochondrial disorders

The bacteria that kills itself to spare the rest of the colony from infection

The most detailed map of the Universe shows it's a little older than we previously thought.

Direct download: SoT_0095.mp3
Category:general -- posted at: 4:06pm AEST

Bizarre, extinct frog set to spawn again

The Promise and Pitfalls of Resurrection Ecology

Bringing Them Back to Life

‘We Have a Limited Window of Opportunity’: CDC Warns of Resistance ‘Nightmare’

'Nightmare' superbug alarm at Dandenong Hospital

The “Nightmare Bacteria”: An Explainer

Windfarm sickness spreads by word of mouth, Australian study finds

Devil cancer's evasive trick revealed

Ancient Mars Had Conditions Suitable for Life

Direct download: SoT_0094.mp3
Category:general -- posted at: 10:55pm AEST

SoT 93: An Extremely Large Telescope

Valentina Tereshkova, the first woman in space.

A baby has been cured of HIV.

Sub-glacial Lake Vostok has life! No wait, it doesn't.

60 Second Science - a video competition with $10,000 in prizes up for grabs!

The next crop of telescopes are enormous.

Diamonds may originate from life on the sea floor.

Direct download: SoT_0093.mp3
Category:general -- posted at: 5:25pm AEST

The winning names for two new moons of Pluto are "Vulcan" and "Cerberus". Wiring the brain of Rat A to the brain of Rat B and watching them communicate. The genetic effect of lack of sleep. An old space tourist thinks sending old people to Mars is a good idea. And the deepest undersea vents are discovered, with some freaky life nearby.

Direct download: SoT_0092.mp3
Category:general -- posted at: 10:51pm AEST

Hosts: Ed Brown, Dr. Shayne Joseph, Penny Dumsday, Lucas Randall and Dr. Simon O'Toole.

The discovery of the smallest planet ever found, and why we should care. Flowers use electric fields to communicate with bees. Could the flu virus have an Achilles' heel? And why are scientists dropping dead mice from helicopters in Guam? Mosquitoes could be developing a resistance to Deet, internet entrepreneurs announce Nobel-like prizes, and January 2013 was quite hot.

Direct download: SoT_0091.mp3
Category:general -- posted at: 5:06pm AEST

Hosts: Ed Brown, Dr. Shayne Joseph, Penny Dumsday, Lucas Randall.

The toilet habits of a small mammal gives climate scientists 55,000 years of data. The humble appendix might not be so useless. An experiment gives some clues about how to repel Earthquakes. The bacterial mechanism behind melamine contaminated milk is discovered. Brushing your teeth might be doing more harm than good. Why is the human body so poorly 'designed', and Captain Kirk weighs in on the name for a Plutonian moon.

Direct download: SoT_0090.mp3
Category:general -- posted at: 9:49pm AEST

Hosts: Ed Brown, Penny Dumsday, Lucas Randall.

Huge meteor blazes across the sky in Russia. A computation of what the last common ancestor of placental mammals looked like. A robot with artificial but transplantable organs goes on display. Why insects constantly clean their antennae. The self-assembling molecules that give clues to the origins of life. France moves to curb light pollution. Thousands of spiders crawling across the Brazilian sky.

Direct download: SoT_0089.mp3
Category:general -- posted at: 11:00pm AEST

Hosts: Ed Brown, Dr. Shayne Joseph, Lucas Randall, Dr. Simon O’Toole.

Topics covered:

TW Hydrae is a star that should be too old to have a proto-planetary disc, but has one. The skeletal remains of King Richard III are found under a car park in Leicester, the secret to owls rotating their heads, and Iran launches a monkey into space. Plus the strange things taught as science in some schools, and lots more!

Direct download: SoT_0088.mp3
Category:general -- posted at: 10:55am AEST

Hosts: Ed Brown, Dr. Shayne Joseph, Penny Dumsday.

Topics covered:

A recap of what we talked about last week, in the episode that disappeared. Leprosy bacteria induces stem cells in the host body, dung beetles use the sky to navigate, and a Harvard Professor that doesn't plan to clone Neanderthals. Scientists watched naked babies falling over and we look at some of the best White House petitions.

Direct download: SoT_0087.mp3
Category:general -- posted at: 10:13pm AEST

Hosts: Ed Brown, Dr. Shayne Joseph, Penny Dumsday, Lucas Randall, Steve Nerlich.

Topics covered:

Genetic expression differs between belly fat and thigh fat, and a breath test that could detect bacterial infections almost immediately. Why Mars colonists could get fat and lazy, and the selection criteria for the Mars One reality show. Plus the defensive mechanisms of shark fetuses, and millions cry out in terror as plans to build a Death Star are scrapped.

Direct download: SoT_0086.mp3
Category:general -- posted at: 11:33pm AEST

Our end of year 'bloopers' episode is online! For all the funny, interesting and weird bits that didn't quite make the show in 2012, download the show from our website, at scienceontop.com/2012. This show is NOT on our feed, to listen you will HAVE to download it manually from the website. It does contain swearing and content that might not be suitable for children.

So go to scienceontop.com/2012 and click the download link!

Direct download: 2012_Bloopers_Announce.mp3
Category:general -- posted at: 1:59pm AEST

Hosts: Ed Brown, Dr. Shayne Joseph, Dr. Mick Vagg, Upulie Divisekera, Lucas Randall.

Ed, Shayne, Upulie, Mick and Lucas take a look back at the big stories in science from 2012. From feathered dinosaurs to robot hands, the Higgs boson to Mars colonies, the panel relives their favorite news items.

For all the stories we mention, check out the website for this episode, at scienceontop.com/85

Direct download: SoT_0085.mp3
Category:general -- posted at: 8:49pm AEST

Hosts: Ed Brown, Dr. Shayne Joseph, Dr. Helen Maynard-Casely, Lucas Randall.

Topics covered:

James Cameron releases results from his deep dive. How maggots heal wounds. NASA plans to send Curiosity twin to Mars in 2020. Golden Spike plans to send people to the moon for $750 million. The data from the GRAIL probes mapping the gravity of the moon is released. A retrovirus marks an evolutionary point for Koalas. RIP Sir Patrick Moore, 1923-2012.

Direct download: SoT_0084.mp3
Category:general -- posted at: 9:48pm AEST

Hosts: Ed Brown, Dr. Shayne Joseph, Penny Dumsday, Dr. Kevin Orrman-Rositer.

Topics covered:

The Mars Curiosity rover's discovery is announced.

Bacteria found in an underground Antarctic lake demonstrates the resilience of life

German scientists are developing a new vaccine strategy using mRNA that could make flu shots cheaper, safer, and easier to produce.

A blood test that can detect cancers very early on is being developed - but it's a long way away.

New research suggests birth weight is not solely determined by maternal nutrition, but it’s also partly genetic.

NASA's MESSENGER spacecraft has detected evidence of water ice on Mercury.

SpaceX founder and entrepreneur Elon Musk has a grand plan to start a colony on Mars, seeding it with 80,000 settlers per year.

Direct download: SoT_0083.mp3
Category:general -- posted at: 8:55pm AEST

Hosts: Ed Brown, Dr. Shayne Joseph, Penny Dumsday, Lucas Randall.

Topics covered:

The holes bored into ancient wood-carvings give insights into insect migration.

Could we be missing important worms from our intestines?

The evolution of vision in animals dates back 700 million years.

A chemical reaction appears to reanimate mycoplasma.

Scientists warn that grapefruit can have serious complications with a growing number of prescription medications.

An American and Russian crew plan to spend a year onboard the International Space Station.

Direct download: SoT_0082.mp3
Category:general -- posted at: 11:25pm AEST

Hosts: Ed Brown, Dr. Shayne Joseph, Penny Dumsday, Cobi Smith.

Topics covered:

Our Total Solar Eclipse experiences.

A 'rogue planet' discovered and photographed. The planet is not gravitationally linked to a star.

A study of the microbes in belly buttons reveals a surprising diversity.

The bdelloid rotifer, despite being asexual for 80 million years, has incorporated foreign DNA to help it adapt.

A newly developed prosthetic hand is a lot like Luke Skywalker's hand.

Transplant from nasal cells enables paralysed dogs to walk.

Do great apes have mid-life crises? Maybe.

A rant about the endless speculation sparked by a Curiosity scientist's gaffe.

Direct download: SoT_0081.mp3
Category:general -- posted at: 5:55pm AEST

Hosts: Ed Brown, Dr. Shayne Joseph, Penny Dumsday, Dr. Simon O’Toole.

Topics covered:

Some scepticism about the nearest exoplanet discovered.

Amateur astronomers find planet in four-star system.

‘Zooniverse’ citizen science projects.

Key test for re-healable concrete.

2012 Prime Minister’s Prizes for Science

Astronomer wins PM’s Science Prize for dark matter discovery

Science Minister’s Prize for Life Scientist of the Year – Mark Shackleton

Malcolm McIntosh Prize for Physical Scientist of the Year – Eric May

Prize for Excellence in Science Teaching in Primary Schools – Michael van der Ploeg

Prime Minister’s Prize for Excellence in Science Teaching in Secondary Schools – Anita Trenwith

All living bird species mapped in giant family tree

Breakthrough Hendra virus vaccine released for horses

Abdominal porthole reveals how tumours come together

Direct download: SoT_0080.mp3
Category:general -- posted at: 4:43pm AEST

Hosts: Ed Brown, Dr. Shayne Joseph, Alan Kerlin.

Topics covered:

Trouble in space: SpaceX engine failure and cargo loss.

Russian rocket also has problems, creates space debris.

Mysterious bacteria form electric cables under the sea.

The hole in the Ozone layer still getting smaller.

Nanoparticles help diagnose disease without waiting for the path lab.

Private space company Blue Origin tests an emergency crew escape system.

Cooking food was key to our big brains.

The dung beetle's intricate and bizarre cooling system.

Direct download: SoT_0079.mp3
Category:general -- posted at: 9:11am AEST

Hosts: Ed Brown, Dr. Shayne Joseph, Penny Dumsday, Dr. Rachael Dunlop.

Topics covered:

Funding cuts to Australian research

Genetically modified mouse to detect landmines

The DNA inside the virophage inside the giant virus inside the amoeba

'Erasing' traumatic memories from mice

Sexism in science and skepticism

Make The World Better - a talk by Pamela Gay

How the sound of crying babies affects the brain

Italian scientists face jail over earthquake manslaughter charges

Direct download: SoT_0078.mp3
Category:general -- posted at: 11:47pm AEST

Hosts: Ed Brown, Dr. Shayne Joseph, Lucas Randall, Dr. Helen Maynard-Casely.

Topics covered:

Felix Baumgartner's world-breaking skydive from the edge of space.

Brainless slime mould can 'remember' where it's been.

Possible new control method for the Crown of Thorns starfish.

DNA half-life - why Jurassic Park is impossible.

Closest planet outside our solar system discovered.

Mars Curiosity looks at an 'unusual' rock.

Could chocolate help you win a Nobel prize? (Answer: No.)

Direct download: SoT_0077.mp3
Category:general -- posted at: 1:22pm AEST

Hosts: Ed Brown, Penny Dumsday, Dr. Mick Vagg.

Topics covered:

2012 Nobel Prize for Physiology or Medicine:  Sir John B. Gurdon and Shinya Yamanaka "for the discovery that mature cells can be reprogrammed to become pluripotent". 2012 Nobel Prize for Physics: Serge Haroche and David J. Wineland "for ground-breaking experimental methods that enable measuring and manipulation of individual quantum systems". 2012 Nobel Prize for Chemistry: Robert J. Lefkowitz and Brian K. Kobilka "for studies of G-protein-coupled receptors". Chemistry vs Biology controversy. New painkillers could come from the super-toxic venome of the black mamba snake. Mosquitoes have adapted a way to get around mosquito nets.

Direct download: SoT_0076.mp3
Category:general -- posted at: 5:27pm AEST

Hosts: Ed Brown, Penny Dumsday, Lucas Randall.

Topics covered:

Genetically modified cow makes milk without allergy protein. DNA from the fetus ends up on mother's brain. A cure for acne could be a virus. Great Barrier Reef losing half its coral cover. Transient Tech - electronics that dissolve in water. A woman grows a replacement ear on her arm, and men without testicles could live longer than those who don't.

Direct download: SoT_0075.mp3
Category:general -- posted at: 8:31am AEST

Hosts: Ed Brown, Dr. Shayne Joseph, Penny Dumsday, Dr. Maia Sauren.

The Ig Nobel Prizes honour achievements that first make us laugh, then make us think. We take a look at this year’s winners: from ponytails to reports about reports about reports.
Direct download: SoT_0074.mp3
Category:general -- posted at: 9:10am AEST

Hosts: Ed Brown, Dr. Shayne Joseph, Penny Dumsday, Dr. Simon O’Toole.

Topics covered:

The Lesula, a newly discovered monkey: cute or creepy? A brain implant improves thinking in monkeys. Scientists explore whether bacteria will swap genes with other similar or different species. NASA's GRAIL mission releases it's first set of results, with surprising new information about our moon. Stem cells improve the hearing of deafened gerbils. And a team develops a coating that makes water boil without bubbles!

Direct download: SoT_0073.mp3
Category:general -- posted at: 1:50pm AEST

Hosts: Ed Brown, Dr. Shayne Joseph, Penny Dumsday.

Topics covered:

The ENCODE project reveals function in previously thought 'junk' DNA. The role of malaria in human evolution. The mystery of the missing dinosaur tales. Could man-made structures like wharves and oil rigs be causing a bloom of jellyfish? Brain-controlled robot legs could help the paralyised walk again, and remote-controlled cockroaches could take over the world and enslave humankind.

This episode uses audio from the video "ENCODE: The story of you", produced by Nature and copyright © 2012 Nature Publishing Group, used with permission.

Direct download: SoT_0072.mp3
Category:general -- posted at: 12:16pm AEST

Hosts: Ed Brown, Lucas Randall, Greg Wah, Dan Beeston.

Topics covered:

Could reality television partly fund a colony on Mars - by 2023? Does the shape of the glass affect how much beer you drink? Mapping the genome of a Denisovan (an ancient human cousin). Bacteria that makes insects destroy their own brains and genitals. And astronomers discover a star with a tasty ring of sugar.

Direct download: SoT_0071.mp3
Category:general -- posted at: 12:13pm AEST

Hosts: Ed Brown, Dr. Shayne Joseph, Penny Dumsday, Alan Kerlin.

Topics covered:

Death of Neil Armstrong, first man on the moon. Could antibiotics be making us fat? A step closer to the male pill. Bacterial infections controlled by RNA, and bonobos can make and use tools.

Direct download: SoT_0070.mp3
Category:general -- posted at: 9:17am AEST

Hosts: Ed Brown, Dr. Shayne Joseph, Lucas Randall.

Topics covered:

Mars update: Curiosity fires a laser, next Mars mission announced. Artificial retina mimicks coding system of healthy retina to restore vision. Ocean Report Card details effects of climate change. The brain's mechanism for cleaning waste discovered, and new findings about formate could lead to new approaches for antibiotics.

Direct download: SoT_0069.mp3
Category:general -- posted at: 10:40am AEST

Hosts: Ed Brown, Dr. Shayne Joseph, Penny Dumsday.

Topics covered:

The vigorous shaking of a wet dog can remove up to 70% of the water in its fur in four seconds. Possibly up to three species of ancient humans lived in Africa 2 million years ago. A new insect species is discovered, thanks to Flickr. Could allergies reduce the risk of certain brain cancers? And did bacteria influence single-celled organisms to form multi-celled animals?

Direct download: SoT_0068.mp3
Category:general -- posted at: 12:38pm AEST

The Mars Science Laboratory, called "Curiosity", is the largest spacecraft we've sent to another planet. Weighing 900kg, packed with ten scientific instruments, 17 cameras and a nuclear power source the rover is looking for signs that Mars could have supported life at some point.

I caught up with Lucas Randal, Sumen Rai and Alan Kerlin to talk about the complicated Entry, Descent and Landing procedure and the rover's two-year mission.

Watch the incredible 7 Minutes of Teror video.

Related links and stories we talked about in this show:

This episode uses clips from various NASA productions believed to be in the public domain, and an excerpt from This Week in Tech's special Curiosity episode, used under the Creative Commons license.

Direct download: SoT_Special_007.mp3
Category:general -- posted at: 2:29pm AEST

Hosts: Ed Brown, Penny Dumsday, Dr. Mick Vagg, Vanessa Hill.

Topics covered:

The Mars Space Laboratory, the Curiosity rover, is set to land on Mars on Monday. An artificial jellyfish made from rat heart cells. Pain and proximity: how pain affects our spacial awareness. Elderly termites become suicide bombers to protect the nest. Has music 'quality' and variety worsened over the years?

Direct download: SoT_0067.mp3
Category:general -- posted at: 9:55am AEST

Hosts: Ed Brown, Dr. Shayne Joseph, Dr. Helen Maynard-Casely, Micaela Jemison, Lucas Randall.

Topics covered:

Helen talks about her work at the Australian Synchrotron, and Shayne explains the chicken vaccines that became a virus. White Nose Syndrome is a fungal disease wiping out populations of bats in North America. A molecule that enables bacteria such as E. Coli to infect cells has been discovered, and physicists have broken a world record by firing 192 lasers and delivering more than 500 trillion watts of power.

Direct download: SoT_0066.mp3
Category:general -- posted at: 4:38pm AEST

Hosts: Ed Brown, Dr. Shayne Joseph, Penny Dumsday, Vanessa Vaughan.

Topics covered:

Fruitflies trained to count, the magnetic cells that help fish navigate, and the trade offs for having big brains. A fifth moon discovered orbiting Pluto, and the most complete skeleton of Australopithicus sediba is found. The trick used by cancer to spread through the bloodstream is identified, and the effects of gastric bypass surgery on gut bacteria.

Direct download: SoT_0065.mp3
Category:general -- posted at: 1:38pm AEST

Hosts: Ed Brown, Dr. Shayne Joseph, Penny Dumsday.

Topics covered:

Spray-on rechargeable batteries, parents are less likely to catch colds. A 'Jekyl and Hyde' bacteria that helps worms but kills insects. Global warming causing shrinking trees, and causing more cyanobacterial toxins in our rivers and lakes.

Direct download: SoT_0064.mp3
Category:general -- posted at: 10:37am AEST

Hosts: Ed Brown, Kate Naughton, Mags Lum, Upulie Divisekera.

Topics covered:

Dear Sir David - write your tributes to a great science communicator. Physicists at CERN have discovered 'Higgs-like' particle. Oxygen injections keep rabbits alive without breathing. Geckos evolved (and lost) their sticky feet many times. A new technique allows doctors to see inside tissues without cutting the skin. And for invasive sea stars, our shipping ports are "hotspots of exotic free-spawning sex".

Direct download: SoT_0063.mp3
Category:general -- posted at: 11:15pm AEST

Hosts: Ed Brown, Dr. Shayne Joseph, Penny Dumsday.

Topics covered:

Early warning system for El Nino weather pattern, the mysteries of the gut microbiome. Pests are adapting to the toxins produced by genetically modified crops, and a study suggests lo-fat dressings don't allow you to absorb the most nutrients from a salad.

And a TEDx talk by former astronaut Ed Lu about remote monitors in the oceans.

Direct download: SoT_0062.mp3
Category:general -- posted at: 6:30pm AEST

Hosts: Ed Brown, Dr. Shayne Joseph, Penny Dumsday, Prof. Daniel Midgely.

Topics covered:

Gorillas use hand gestures to talk to their children, repeating it like 'baby talk'. Primates may first have spread from Africa to Asia, then back to Africa before humans evolved and spread Out of Africa. The chainmain on bacteria finally revealed. To teach a robot, start with a baby robot. The secret weapon against cane toads: cannibal cane toads! Wider spacing between letters makes reading easier for dyslexic children. Voyager 1 is leaving our solar system... sort of.

Direct download: SoT_0061.mp3
Category:general -- posted at: 9:37pm AEST

Hosts: Ed Brown, Dr. Shayne Joseph, Dr. Mick Vagg.

Topics covered:

Pain medication derived from cannabis vs opioids. A new theory about why giant insects died out 130 million years ago. Giant raindrops have almost no effect on small mosquitoes. Study of the Gulf of Mexico shows dramatic changes to the microscopic ecosystems after the Deep Water Horizon oil spill. Overfed fruit flies develop insulin resistance, just like humans. And researchers have sequenced the genome of an unborn baby with 98% accuracy.

Direct download: SoT_0060.mp3
Category:general -- posted at: 4:37pm AEST

Hosts: Ed Brown, Penny Dumsday, Lucas Randall, Jo Benhamu.

Topics covered:

A new study suggest there really is an "old people's smell". A combination of therapies help rats with severed spinal cords walk again. Fruit flies prove a genetic link for Restless Leg Syndrome. Carbon found in a Mars meteorite is probably volcanic, and not related to life. Astronaut vision loss and cranial hypertension may be the result of an inability to process vitamins in space. The cartoons were right - 'evil eyebrows' and a beard trigger our primal 'threat' instinct. A new study supports the Mediterranean diet as beneficial for 'quality of life'. Two new elements on the Periodic table, and sarcastic computers might not be far away.

Direct download: SoT_0059.mp3
Category:general -- posted at: 11:10pm AEST

Hosts: Ed Brown, Penny Dumsday, Vanessa Hill, Micaela Jemison.

Topics covered:

Micaela discusses the importance of micro-bats for keeping insects under control. For more information check the Australasian Bat Society website, in particular their excellent Fact Sheets. Vanessa tells us about Launchpod, her new podcast exploring the many different careers available in space-related fields. Two Site Solution: The SKA to be built in Australia AND South Africa. SpaceX successfully launches and docks Dragon, the first privately built spacecraft to dock with the International Space Station. A cotton T-shirt that acts like a capacitor and could be used to charge mobile phones. Glasses that enhance vision for the visually impaired by artificially colouring objects according to their distance. The World Health Organisation releases its One Year Report on Fukushima, and it's pretty good news. And we discuss the upcoming Transit of Venus and the partial lunar eclipse.

Direct download: SoT_0058.mp3
Category:general -- posted at: 3:35pm AEST

Hosts: Ed Brown, Dr. Shayne Joseph, Lucas Randall, Kate Naughton.

Topics covered:

Stroke victims control a robotic arm using just their thoughts. By rerouting nerves, surgeons restore some hand motion to a quadriplegic. Possibly the oldest cave art we know of features female genitalia. Transplanting human genes into zebrafish gives some clues about the genetics of autism, schitzophrenia and obesity. Scientists develop a potential malarial vaccine, from algae. Some viruses, stacked on top of each other, can be used to produce electricity.

Direct download: SoT_0057.mp3
Category:general -- posted at: 5:29pm AEST

Hosts: Ed Brown, Dr. Shayne Joseph, Penny Dumsday.

Topics covered:

Dogs that yawn when their owners do - the only case of contagious yawning crossing species. Santino the Stone-Throwing Chimp gives us more evidence to suggest he plans for the future. A new coating kills bacteria not with chemicals, but by crushing them. The 'Grandmother Hypothesis' could explain link between breast cancer and high fertility. Living near forests or farms rather then urban environments could mean fewer allergies. Kiwifruit-destroying bacteria tracked back to two different strains from China and Italy.

Direct download: SoT_0056.mp3
Category:general -- posted at: 4:22pm AEST

Hosts: Ed Brown, Dr. Shayne Joseph, Lucas Randall, Steve Nerlich.

Topics covered:

Planetary Resources, a company backed by several billionaires, plans to mine asteroids in space - and it's not as crazy as you might think. Brain scans of dogs could give clues about how they understand language and emotions. Koalas are now considered vulnerable and added to the threatened species list. The liver plays a role in resetting the body clock after jetlag or shift work. The ESA's next mission to get the go-ahead could be JUICE, the Jupiter Icy Moon Explorer.

Direct download: SoT_0055.mp3
Category:general -- posted at: 6:13pm AEST