Dr Karl
View all

Triple J Science Questions

View all

Next up on the Radio

  • Wednesday 29th May 2019
    10:30 am - 11:00 am

    Dr Karl joins Nicole Dyer on ABC Gold Coast

  • Wednesday 29th May 2019
    11:30 am - 12:00 pm

    Dr Karl joins Phil Staley on ABC Cairns

  • Thursday 30th May 2019
    11:00 am - 12:00 pm

    Dr Karl joins Linda Marigliano on ABC Triple J Science Mornings

  • Wednesday 5th June 2019
    10:30 am - 11:00 am

    Dr Karl joins Nicole Dyer on ABC Gold Coast


Latest Books

View all

Recent Articles & Stories

View all
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 […]

Great Moments in Science

The Ig Nobel Prizes

Most of us have heard of the Nobel Prizes, awarded for work that is unexpected, important—and deep. But not everybody has heard of the comedy version, the Ig Nobel Prizes. In 2016, they were given for research involving rats in tiny trousers, pseudoscientific gibberish, rocks with personalities—and seven other topics.


National Geographic Kids

How Much Does a Cloud Weigh?

A cloud is made up of many, many tiny ‘clumps’ of water, either liquid or frozen. The liquid droplets are about 0.002mm across – smaller than the thickness of a human hair. Some of these tiny droplets are so small that it would take a million of them to make a single raindrop! Different clouds […]

Great Moments in Science

Say cheese

Hard, soft, smelly or blue there’s a cheese for every occasion. But is it time to rethink our relationship with this delicious dairy product?