Dr Karl
Dr Karl on TikTok!
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Triple J Science Questions

Science with Dr Karl
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Next up on the Radio

  • Wednesday 4th March 2026
    9:30 am - 10:00 am

    Dr Karl joins Sarah Cumming on ABC Gold Coast

  • Wednesday 4th March 2026
    7:00 pm - 7:30 pm

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

  • Thursday 5th March 2026
    11:00 am - 12:00 pm

    Dr Karl joins Lucy Smith on ABC Triple J Science Mornings

  • Thursday 5th March 2026
    2:00 pm - 2:30 pm

    Dr Karl joins Joel Rheinberger on ABC Hobart


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Australian Geographic

The fate of our first submarine

Dr Karl tells the story of Australia’s first submarine in World War One, the AE2. ON 31 DECEMBER, 1914, AE2 Australia’s only submarine (AE1 had been lost at sea off New Guinea two months earlier), sailed from Australia towards the Dardanelles. The plan was to trailblaze a path for the Allied fleet into the inland […]

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Emotional chords, hungover libido, forced smiles

Does forcing a smile really make you happier? Why do certain notes or chords have emotional responses? Is urine good for helping lemon trees grow?


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Bubbles, bushfires and back burning

Why do fires burn faster uphill rather than down? Can you cook a chicken by slapping it? What are the affects of bushfires on trees?

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Floating tips, sound in space & aburpia

Why do we float horizontally in water? Why do some adults develop anaphylaxis? Is soda water good for you?