Science On Top (general)
The Australian Podcast putting Science on Top of the agenda

Hosts: Ed Brown, Penny Dumsday, Dr. Carolyn de Graaf

00:11:15 Harvard researchers have systematically profiled every cell in developing zebrafish and frog embryos, showing how one cell develops into an entire organism.

00:15:28 81-year-old James Harrison has saved millions of babies. His weekly blood donations have been used to create a treatment to protect unborn babies from the deadly Rhesus D Haemolytic Disease (HDN).

00:23:16 Experts from around the wold have signed a letter to the World Health Organisation calling for more action to fight the cancer-causing retrovirus HTLV-1.

00:29:36 Ancient tools found on Mediterranean islands could suggest that Neanderthals had at least rudimentary seafaring skills.

 

This episode contains traces of US congressman Mo Brooks grilling climate scientist Dr. Philip Duffy before the House Science, Space and Technology Committee about the causes of sea level rise.

Direct download: SoT_0296.mp3
Category:general -- posted at: 10:18pm AEST

Hosts: Ed Brown, Penny Dumsday, Sarah de Garis

00:01:25 A study by a team from University of Sussex shows that horses can not only distinguish human facial expressions, but they remember people's emotional states several hours later.

00:08:23 Male fruit flies enjoy sex.

00:17:07 There's a fungus that uses tiny crystals to sense gravity. And it can do that, because it stole genes from a bacteria.

00:21:06 Kids have a lot of energy - but in terms of endurance and recovery, they can even perform better than highly-trained adult endurance athletes.

 

This episode contains traces of Amazon and Blue Origin founder Jeff Bezos sharing his vision of a space-faring future.

Direct download: SoT_0295.mp3
Category:general -- posted at: 8:42pm AEST

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

00:01:31 While studying the enzyme produced by a bacteria that eats plastic, an international team has accidentally made it even better.

00:08:57 NASA's new planet-hunding spacecraft has launched. TESS will study 85% of the sky, and will be able to study the mass, size, density and orbit of thousands of exoplanets.

00:23:37 Retrotransposons - elements of DNA that can spread to other species - are being found more and more often. And they're almost ubiquitous in marine animals, especially shellfish.

 

This episode contains traces of French President Emmanuel Macron speaking before the US Congress.

Direct download: SoT_0294.mp3
Category:general -- posted at: 9:44pm AEST

Hosts: Ed Brown, Lucas Randall, Peter Miller

00:01:13 The bowhead whale sings a different tune to the humpback whale. It's more jazz to the humpback's classical.

00:07:38 The closest star outside our solar system just did a big burp. And it wouldn't be good for any life on its planet.

00:21:57 The hottest chilli in the world was the Carolina Reaper. A competitive eater ate one, then regretted it.

 

This episode contains traces of Will Smith interviewing astronaut Drew Feustel on the International Space Station.

Direct download: SoT_0293.mp3
Category:general -- posted at: 10:06pm AEST

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

00:01:00 New York researchers have detailled the "structure and distribution of an unrecognized interstitium in human tissues". Or as some are calling it, a brand new organ.

00:16:37 New evidence lends credibility to an old theory of how Vikings navigated the seas. They could have used 'sunstones' and polarised light to find the sun in cloudy conditions.

00:24:39 Thanks to gravitational lensing, astronomers using the Hubble Space Telescope have imaged the most distant star ever seen - 9 billion light years away.

00:29:28 Non-profit news service Kaiser Health News has launched a large database tracking pharmaceutical companies and where they spend their money. In one year drug companies spent $63 million on political lobbying activities but almost double that on Patient Advocacy Groups.

00:41:39 You probably didn't realise it, but the puffins have flourescent beaks. So why is this researcher making them wear sunglasses?

 

This episode contains traces of Breakfast Television Toronto hosts Kevin Frankish and Frank Ferragine discussing the interstitium.

Direct download: SoT_0292.mp3
Category:general -- posted at: 1:29pm AEST

Hosts: Ed Brown, Penny Dumsday, Lucas Randall

00:01:06 The Draw-A-Scientist test has been a regular investigation of children's ideas about science. The proportion of women being drawn has risen sharply since the test was first done in the 1960s.

00:09:09 70,000 years ago a small red dwarf star hurtling through space came within a light-year of our sun. Scholtz's star is now about 20 light years away but it's likely responsible for the orbits of a lot of comets and asteroids in our solar system.

00:20:52 Newspapers are dying, especially local newspapers. But the decline in local news outlets has a big effect on epidemiology, as researchers try to track the spread of diseases that aren't recorded anywhere else.

 

This episode contains traces of CBS News correspondent Anna Werner describing a new Californian requirement for a cancer warning on coffee.

Direct download: SoT_0291.mp3
Category:general -- posted at: 1:00pm AEST

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

00:01:15 Stephen Hawking led a remarkable life, and a brilliant career in theoretical physics and cosmology. His genius will be sorely missed.

00:08:53 Contrary to many news reports, NASA's twin experiment did NOT find that 7% of astronaut Scott Kelly's DNA was changed by space travel. There were some health effects, but he definitely remained human.

00:15:58 Some media outlets, such as LiveScience, issued corrections.

00:17:56 The long-billed corella is a parrot may have become a pest to many farmers in Australia, but not so long ago their numbers were very low.

00:22:27 There's a Chinese space station that's hurtling out of control towards Earth. We don't know when it will hit, where it will hit, how much will burn up in the atmosphere or what toxic substances may still be on board. But you'll probably be fine.

00:29:37 NASA's super-successful planet-hunting spacecraft, Kepler, is running out of fuel.

 

This episode contains traces of Stephen Hawking talking to Carl Sagan and Arthur C. Clarke about black holes in 1988.

Direct download: SoT_0290.mp3
Category:general -- posted at: 10:45pm AEST

Hosts: Ed Brown, Penny Dumsday, Dr. Helen Maynard-Casely

00:02:37 The Juno spacecraft has returned extraordinary new data about Jupiter's cloud system and interior.

00:14:51 Diabetes, which affects about 415 million people around the world, has conventionally been categorised into three types - Type 1, Type 2 and gestational diabetes. But a new study indicates that there may in fact be 6 different types of diabetes.

00:20:39 Using satellite and drone technology, researchers have found a new supercolony of more than 1.5 million Adélie penguins.

00:25:54 A tribe of people that lived in Southern Africa nearly a thousand years ago have unintentionally left a legacy that is now a new source of information about the Earth's magnetic field.

 

Dr. Helen Maynard-Casely is an instrument scientist for the WOMBAT high-intensity powder diffractometer at the Bragg Institute. She writes “The Shores of Titan” column on The Conversation. Her most recent scientific paper, The Acetylene-Ammonia Co-crystal on Titan, is published in the journal ACS Earth and Space Chemistry.

 

This episode contains traces of Liz MacDonald, a space scientist at NASA's Goddard Space Flight Center, describing a newly discovered type of aurora.

Direct download: SoT_0289.mp3
Category:general -- posted at: 10:47am AEST

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

00:01:04 In April 2015, unusually heavy thunderstorms flooded Chile's Atacama desert, the second driest region in the world. This messed up the plans of researchers there to study life in the Mars-like desert, but it also told them more about how life can survive in long periods of drought.

00:09:27 Two Dutch researchers have looked at more than 100 examples of dice from the last 2,000 years. This huge collection can give us some clues about how people have thought about chance, fate and probability over the centuries.

00:16:23 The crickets on the Hawaiian island of Kawaii have gone quiet. They're still there, they're still trying to chirp, but they're not making any sound].

00:22:53 There are 167 known species of tardigrades - the virtually indestructible eight-legged micro-animals. But the recently discovered 168th has unusual eggs.

00:26:31 And speaking of tardigrades, Shayne has some feels about Star Trek: Discovery.

 

This episode contains traces of the Today Extra TV program discussing a study that didn't suggest eating McDonald's fries could cure baldness.

Direct download: SoT_0288.mp3
Category:general -- posted at: 9:27pm AEST

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

00:01:06 SpaceX successfully launched the most powerful operational rocket in the world, sending a car into space.

00:12:34 An invasive species of crayfish has been tracked back to single animal, which reproduces by cloning itself.

00:19:50 Researchers have found a surprising amount of bacteria-eating viruses in an unlikely place - women's bladders.

00:27:16 DNA analysis and facial reconstruction techniques have revealed a surprising portrait of a Cheddar Man, a human who lived in England 9,100 years ago.

00:31:41 Palaeontologists have found spectacularly well preserved proto-spiders suspended in amber. The ancient arachnids had tails longer than their tiny bodies.

 

This episode contains traces of "Starman" being deployed into space to the music of David Bowie, and the celebrations of engineers at SpaceX.

Direct download: SoT_0287_correct.mp3
Category:general -- posted at: 12:01am AEST