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Next up on the Radio

  • Wednesday 2nd April 2025
    7:00 pm - 7:30 pm

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

  • Thursday 3rd April 2025
    11:00 am - 12:00 pm

    Dr Karl joins Lucy Smith on ABC Triple J Science Mornings

  • Thursday 3rd April 2025
    2:30 pm - 3:00 pm

    Dr Karl joins Alice Matthews on ABC Canberra

  • Thursday 3rd April 2025
    2:30 pm - 3:00 pm

    Dr Karl joins Jess Ong on ABC Darwin

  • Thursday 3rd April 2025
    3:30 pm - 4:00 pm

    Dr Karl joins Prue Bentley on ABC Regional Victoria


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Great Moments in Science

Why the sky is blue. For reals

For such a common question, this took a lot of answering.

Great Moments in Science

Why spiders don’t go commando

Spiders dropping down on their silk thread never get caught twisting in the breeze, like abseiling commandos do. Because chemistry.


Great Moments in Science

Could we capture and store energy from lightning?

Could lightning be used to power the planet instead of fossil fuels? Karl Kruszelnicki finds out.

In the News

ABC News 24: Chronic Lateness

What kind of late are you? Are you a Dreamer, Defier, Perfectionist or Crisis Maker?