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Next up on the Radio
Wednesday 18th February 2026
9:30 am - 10:00 amWednesday 18th February 2026
7:00 pm - 7:30 pmDr Karl joins Kelly Higgins-Devine on ABC Brisbane/Queensland
Thursday 19th February 2026
11:00 am - 12:00 pmDr Karl joins Lucy Smith on ABC Triple J Science Mornings
Thursday 19th February 2026
2:00 pm - 2:30 pmDr Karl joins Joel Rheinberger on ABC Hobart
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Uncategorized
Peeing on lemon trees, hereditary birth marks and yellow sunglasses
Why is it considered a good thing to urinate on lemon trees? Plus: can birth marks be hereditary?; and why do yellow sunglasses make daylight appear brighter?
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Blocking phone signals, vinegar-soothed sunburn and popping a yawn
Do microwave ovens block mobile phone reception? Will vinegar sooth sunburn? How can you ‘pop’ a yawn?
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Farmer's tales, shaved-head hair, and quantum physics and God
What happens when fruit and vegetables cross-pollinate? Why does my hair appear to grow quicker now I shave my head? Does quantum physics imply the existence of a God?
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Exploding stars, dark matter and meteor's
Can cats land on their feet in space? Why are planets round? What would happen to the earth if the sun moved closer?
