Dr Karl
Dr Karl on TikTok!
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Triple J Science with Dr Karl

Triple J Science with Dr Karl
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Next up on the Radio

  • Thursday 5th November 2026
    9:30 am - 10:00 am

    Dr Karl joins Rory McClaren on ABC Adelaide

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

    Dr Karl joins Lucy Smith on ABC Triple J Science Mornings

  • Thursday 5th November 2026
    2:30 pm - 3:00 pm

    Dr Karl joins Alice Matthews on ABC Canberra

  • Thursday 5th November 2026
    2:30 pm - 3:00 pm

    Dr Karl joins Jess Ong on ABC Darwin


Latest Books

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Recent Articles & Stories

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Uncategorized

Black holes, quantum computing and oncoming doom

Could our universe be a hologram? Can colliding black holes create musical notes? Will our universe collapse in on itself? Dr Karl and Professor Patrick Hayden from Stanford University answers these questions and more.

Uncategorized

Creating gold, clicking and skin flaps

Are there different species of humans? Is the earth getting heavier? Why can i put my dreams on hold? Dr Karl answers these questions and more, with guest host Karla Ranby on triple j Mornings.


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Puppies, Arnold Schwarzenegger and memory

Why is the world’s population 50% male and 50% female? Is it softer to run on the road or the footpath? How does skin know to grow back?

National Geographic Kids

Extraordinary X-rays

X-rays are under the microscope with Dr Karl… X-Rays uncovered! On 22 December, 1895 the German physicist Wilhelm Röntgen took the first ever medical X-ray. It was of his wife’s hand! X-rays are a form of electromagnetic radiation. When this light passes through the body and onto a photographic plate, pictures of bones and some […]