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Next up on the Radio
Wednesday 23rd September 2026
9:30 am - 10:00 amWednesday 23rd September 2026
10:30 am - 11:00 amDr Karl joins Susan Graham-Ryan on ABC Townsville
Wednesday 23rd September 2026
7:00 pm - 7:30 pmDr Karl joins Kelly Higgins-Devine on ABC Brisbane/Queensland
Thursday 24th September 2026
9:30 am - 10:00 amDr Karl joins Rory McClaren on ABC Adelaide
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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?
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Life on Mars, space welds, menstrual moon cycles
Are we still seeing light from The Big Bang? Does space end? Is a earthquake on Mars called a Mars-quake? Dr Karl answers this question and more on triple j Mornings, with Professor Don Kurtz and host Lucy Smith.
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Dying suns, falling in love and earwax
What makes a planet a planet? Why haven’t we gone back to the moon? What’ll happen to the International space station when we’re done with it? Dr Karl is away for the month, so science journalist Bianca Nogrady is stepping in to be your science sherpa on triple j. Joining her today was Professor Lisa […]
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Swallowing chewing gum, taste buds and drinking milk
What happens if you swallow chewing gum? Plus: can a woman’s tastebuds change during and after pregnancy?; and can drinking milk cause osteoporosis?
