Dr Karl

About Karl

When NASA classified Karl as non-astronaut material in 1981 he walked straight into ABC Radio station Double J and offered to talk about the Space shuttle launch. They said ‘Okay’ and his radio career took off from there. ‘Great Moments In Science’ ran on Double J while Karl moonlighted as a medical student. read full bio

Where is Karl?

You can catch Karl all over the airwaves, check out his upcoming time slots.

  • Dr Karl joins Zan Rowe on ABC Triple J Science on Mornings

    Thursday 24th August 2017
    11:00 am - 12:00 pm

  • Dr Karl joins Rhod Sharp on BBC Radio 5 Live

    Thursday 24th August 2017
    12:00 pm - 1:00 pm

  • Dr Karl joins Nicole Dyer on ABC Gold Coast

    Wednesday 30th August 2017
    9:30 am - 10:00 am

View full schedule

From the Blog

The science of sinkholes

GREAT MOMENTS IN SCIENCE: Sinkholes seem to happen out of the blue, swallowing up cars, houses or even whole streets. Dr Karl gets stuck into the science of sinkholes.

Popular sunscreen chemical can kill baby corals

Consider wearing zinc or covering up next time you’re snorkeling, says Dr Karl – one popular sunscreen chemical can be toxic for baby corals. ON A TRIP TO the Galapagos Islands, our guide asked us not to use sunscreen at one reef. He told us it was very fragile, and quite small, and that the […]

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