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Next up on the Radio

  • Thursday 19th June 2025
    9:30 am - 10:00 am

    Dr Karl joins Rory McClaren on ABC Adelaide

  • Thursday 19th June 2025
    11:00 am - 12:00 pm

    Dr Karl joins Lucy Smith on ABC Triple J Science Mornings

  • Thursday 19th June 2025
    2:00 pm - 2:30 pm

    Dr Karl joins Joel Rheinberger on ABC Hobart

  • Thursday 19th June 2025
    2:30 pm - 3:00 pm

    Dr Karl joins Alice Matthews on ABC Canberra

  • Thursday 19th June 2025
    2:30 pm - 3:00 pm

    Dr Karl joins Jess Ong on ABC Darwin

  • Thursday 19th June 2025
    3:30 pm - 4:00 pm

    Dr Karl joins Prue Bentley on ABC Regional Victoria

  • Thursday 19th June 2025
    4:30 pm - 5:00 pm

    Dr Karl joins Ali Moore on ABC Melbourne


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Great Moments in Science

What to know about sunscreens

Australia very sunny, and because of that it is also a skin cancer hotspot. UV light triggers skin cancer but UV light is blocked by sunscreen. So, is it better to use more of it. Not really and do not mix your sunscreens, because there are two different types.

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Hand washing, active cases, hot chooks

How long does an asymptomatic person stay asymptomatic? Should we be worried about the fumes from hand sanitizer? How long can I eat my hot chicken leftovers for? Dr Karl answers these questions and more on triple j Mornings, with host Lucy Smith and Science reporter Olivia Willis from ABC News.


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Exploding beer, bath wrinkles, dog poop

Why did salt make my beer explode? Why doesn’t your entire body wrinkle when you’re in the bath? Why dont dogs poo and pee at the same time?

Great Moments in Science

Beetroot wee and spag bol stains

What is it with red food and stains? So many things!