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.

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.

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.