Dr Karl

About Karl

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

Since then, his media career has exploded to include TV, books, newspapers, magazines, scripting, professional speaking, and of course, the Net.

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 4th March 2015
    11:00 am - 11:30 am

  • Dr Karl joins Steve Austin on ABC 612 Brisbane

    Thursday 5th March 2015
    10:30 am - 11:00 am

  • Triple J on Mornings with Zan Rowe

    Thursday 5th March 2015
    11:00 am - 12:00 pm

View full schedule

From the Blog


Mice are real gym bunnies

GREAT MOMENTS IN SCIENCE: You don’t need mirrors and doof-doof music to get wild mice, rats and even snails to go to the gym – according to Dr Karl they love a good workout on the running wheel.

Electron microscope image of bacteriophages attacking bacteria (Source: Dr Graham Beard/Wikimedia Commons)

‘Good guy’ virus kills bacteria

GREAT MOMENTS IN SCIENCE: Bacteriophages kill about half the bacteria on Earth every day. Dr Karl explains how nature’s guided missiles can treat common diseases.

View all posts

Follow Karl on Instagram