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Next up on the Radio
Wednesday 19th August 2026
9:30 am - 10:00 amWednesday 19th August 2026
7:00 pm - 7:30 pmDr Karl joins Kelly Higgins-Devine on ABC Brisbane/Queensland
Thursday 20th August 2026
11:00 am - 12:00 pmDr Karl joins Lucy Smith on ABC Triple J Science Mornings
Thursday 20th August 2026
2:00 pm - 2:30 pmDr Karl joins Joel Rheinberger on ABC Hobart
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Recent Articles & Stories
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Unmoving escalators, circumnavigating ash clouds and orange oranges
Why does it feel unusual when walking on a stationary escalator? Plus: why did the recent Chilean volcano ash cloud travel in the opposite direction to the prevailing winds? And why are oranges orange?
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 […]
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Soft copper, blue tyres and compression pants
Can copper pipes be made hard again after they have been overheated then cooled? Why do new tyres sometimes leave a blue mark on the ground? Do sports compression shorts work?
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Rollercoasters, plasma & wormholes
Dr. Karl answers all your science questions, including; what do flies want? How do bullets kill people? Why does dog poo turn white?
