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 Robbie Brechin ABC Adelaide

    Wednesday 17th February 2016
    11:00 am - 11:30 am

  • BBC Radio 5 live’s Up All Night

    Thursday 18th February 2016
    3:00 am - 4:00 am

  • Dr Karl joins Steve Austin on ABC 612 Brisbane

    Thursday 18th February 2016
    10:30 am - 11:00 am

View full schedule

From the Blog


Meet the radioactive you

GREAT MOMENTS IN SCIENCE: We are bathed by radioactivity 24 hours a day. Dr Karl lists some of the most common – and surprising – sources.

Bees can fly at altitudes greater than nine kilometres with a normal load (Source: stephanmorris/iStockphoto)

The ‘bumblebees can’t fly’ lie

GREAT MOMENTS IN SCIENCE: Billions of insects take to the sky every day, but we’ve only recently discovered how their flimsy wings support them. Dr Karl lifts the lid on insect flight.


Brontosaurus: what’s in a name?

GREAT MOMENTS IN SCIENCE: Brontosaurus is back – at least in name. It’s reinstatement as an official dinosaur is a win for the splitters, says Dr Karl, and the lumpers just have to lump it.

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