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Next up on the Radio

  • Thursday 1st May 2025
    11:00 am - 12:00 pm

    Dr Karl joins Lucy Smith on ABC Triple J Science Mornings

  • Thursday 1st May 2025
    2:00 pm - 2:30 pm

    Dr Karl joins Joel Rheinberger on ABC Hobart

  • Thursday 1st May 2025
    2:30 pm - 3:00 pm

    Dr Karl joins Alice Matthews on ABC Canberra

  • Thursday 1st May 2025
    2:30 pm - 3:00 pm

    Dr Karl joins Jess Ong on ABC Darwin

  • Thursday 1st May 2025
    3:30 pm - 4:00 pm

    Dr Karl joins Prue Bentley on ABC Regional Victoria


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Period nosebleeds, brains, simulations

What happens if I fall into the deepest hole on earth? Could my dog get COVID-19? How does Dr Karl’s brain work? Dr Karl answers these questions and more on triple j Mornings, with host Lucy Smith.

Great Moments in Science

Alkaline diets

It’s said that the ‘alkaline diet’ can help you lose weight, and fight off cancer โ€” but it looks like these claims don’t stand up.


Great Moments in Science

Black holes bared

The final piece about why the 100 million or so black holes in our Milky Way galaxy are missing.

Great Moments in Science

Wi-fi is watching us

Many of us access the internet, and the world wide web, via wi-fi. Wi-fi lets us into a fabulous world of shared knowledge and social interaction. On the flip side, it seems that wi-fi can look at us, and perhaps even spy on us. It can even recognize moving humans on the other side of a wall. And this happens by examining not the content of the wi-fi signal, but its strength and timing.