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Next up on the Radio
Thursday 12th November 2026
11:00 am - 12:00 pmThursday 12th November 2026
2:00 pm - 2:30 pmDr Karl joins Joel Rheinberger on ABC Hobart
Thursday 12th November 2026
2:30 pm - 3:00 pmDr Karl joins Alice Matthews on ABC Canberra
Thursday 12th November 2026
2:30 pm - 3:00 pmDr Karl joins Jess Ong on ABC Darwin
Thursday 12th November 2026
3:30 pm - 4:00 pmDr Karl joins Prue Bentley on ABC Regional Victoria
Latest Books
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Recent Articles & Stories
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Australian Geographic Need to know: Bird poo hue
Why is most bird poo white, even though birds eat food of many different colours? The answer has two parts. One is that birds have to get rid of excess nitrogen in their diet. The other is that bird poo does actually come in different colours. Nitrogen is an element in all proteins. Sometimes there […]
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Head spins, granite cookware and bullets fired in the air
Why does your head seem to spin when you lie down if drunk? What are the differences between various cookwares and are any types dangerous? What happens to bullets that are fired into the air?
Australian Geographic The fate of our first submarine
Dr Karl tells the story of Australia’s first submarine in World War One, the AE2. ON 31 DECEMBER, 1914, AE2 Australia’s only submarine (AE1 had been lost at sea off New Guinea two months earlier), sailed from Australia towards the Dardanelles. The plan was to trailblaze a path for the Allied fleet into the inland […]
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Rising sea levels, brain's exploding and evolution
Is a Googleplex the biggest single number? Are rising sea levels only caused by ice melting? Why do we get blocked noses?
