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Next up on the Radio

  • Thursday 26th February 2026
    9:30 am - 10:00 am

    Dr Karl joins Rory McClaren on ABC Adelaide

  • Thursday 26th February 2026
    11:00 am - 12:00 pm

    Dr Karl joins Lucy Smith on ABC Triple J Science Mornings

  • Thursday 26th February 2026
    2:30 pm - 3:00 pm

    Dr Karl joins Alice Matthews on ABC Canberra

  • Thursday 26th February 2026
    2:30 pm - 3:00 pm

    Dr Karl joins Jess Ong on ABC Darwin


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Puppies, Arnold Schwarzenegger and memory

Why is the world’s population 50% male and 50% female? Is it softer to run on the road or the footpath? How does skin know to grow back?

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Flies in winter, seeing underwater and concussions from gigs

Why do drug addicts like chocolate milk? Does donating blood burn calories? Where did the English language come from?


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Frozen heads, period poos, looking at an eclipse

Could you keep moving your head to new bodies and live forever? How are birthmarks formed? Is it possible to bite or eat yourself?

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Hungry galaxies, climate change and sleeping with eyes open

How will the galaxy Andromeda be feeding on our galaxy The Milky Way? Plus climate change, a positive future and sleeping with your eyes open.