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Next up on the Radio

  • Wednesday 25th March 2026
    9:30 am - 10:00 am

    Dr Karl joins Sarah Cumming on ABC Gold Coast

  • Wednesday 25th March 2026
    10:30 am - 11:00 am

    Dr Karl joins Susan Graham-Ryan on ABC Townsville

  • Wednesday 25th March 2026
    7:00 pm - 7:30 pm

    Dr Karl joins Kelly Higgins-Devine on ABC Brisbane/Queensland

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

    Dr Karl joins Rory McClaren on ABC Adelaide


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Evolving dogs, coffee shakes and webbed toes

Have the planets ever lined up in the solar system? Why can some people whistle in tune, but not sing in tune? Can you water plants using hot water?

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Synaesthesia, multiple moons, safe AI

What is happening in the brain when someone experiences synaesthesia? What would happen if we had more than one moon? How fast would you need to travel to keep up with the sun?


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Workout music and rumbling stomachs

Why do some people work harder at the gym when they listen to a favourite tune? Plus: why does your stomach rumble when you are hungry? And why do your hands tingle after an orgasm?

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Left-handed kids, body bacteria & liquid nicotine

Why is the sky blue during sunsets? What’s outside the universe? What came before the dinosaurs?