Dr Karl
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Triple J Science Questions

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Next up on the Radio

  • Wednesday 17th January 2018
    10:30 am - 11:00 am

    Dr Karl joins Nicole Dyer on ABC Gold Coast

  • Wednesday 17th January 2018
    11:00 am - 11:30 am

    Dr Karl joins Ali Clarke on ABC Adelaide

  • Wednesday 17th January 2018
    11:30 am - 12:00 pm

    Dr Karl joins Paula Tapiolis on ABC Townsville

  • Thursday 18th January 2018
    11:00 am - 12:00 pm

    Dr Karl joins Linda Marigliano on ABC Triple J Science Mornings

  • Thursday 18th January 2018
    2:00 pm - 3:00 pm

    Dr Karl joins Rhod Sharp on BBC Radio 5

  • Wednesday 24th January 2018
    10:30 am - 11:00 am

    Dr Karl joins Nicole Dyer on ABC Gold Coast

  • Wednesday 24th January 2018
    11:30 am - 12:00 pm

    Dr Karl joins Phil Staley on ABC Cairns


Latest Books

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Recent Articles & Stories

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Great Moments in Science

Why we need a leap second added to our clocks

GREAT MOMENTS IN SCIENCE: As New Year’s Eve ticked over to 2017, scientists added an extra second to atomic clocks to compensate for the Earth’s variable rotation. Dr Karl explains the pros and cons of doing this.

Great Moments in Science

Why did the US lose the height advantage?

GREAT MOMENTS IN SCIENCE: People in the US used to be among the tallest in the world, but now that honour goes to the Dutch. Dr Karl gets to the bottom of the slide in height.


National Geographic Kids

The Pillars of Creation

The Eagle Nebula is a stellar nursery: a place where new stars are born. It’s about 7,000 light years away from Earth (for comparison, the nearest star to our sun is about four light years away). The Eagle Nebula contains three enormous pillars (a few light years high), growing like stalagmites from the floor of […]

Great Moments in Science

What would happen if the Earth stopped rotating?

GREAT MOMENTS IN SCIENCE: The good news is that if the Earth’s rotation stopped, we wouldn’t fall off, but it would be a very inhospitable place, Dr Karl explains.