Why don't your teeth grow, like nails or hair? What is the smallest particle and what is it made up of? How does natural instinct work?

Wissenschaft & Technik
Dr Karl Podcast Folgen
Join Dr Karl Kruszelnicki, Lucy Smith and their scientific guests, with a bunch of curious triple j listeners for a weekly injection of science, myth-bashing and answers!
Folgen von Dr Karl Podcast
241 Folgen
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Folge vom 13.07.2017Underwater volcanoes, dog yawns, immortality
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Folge vom 20.08.2015Deep sea climate change, enviro bags, over-fishingIt's a Marine Science Special! Professor Emma Johnson joins Dr Karl and Zan Rowe to help answer your ocean-based science questions.
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Folge vom 13.08.20153D printed organs, muscle memory, that op shop smellWhy do op shops all smell the same? Why can't we use 3D printers to print organs? Is there any benefit to avoiding gluten?
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Folge vom 06.08.2015Emotional chords, hungover libido, forced smilesDoes forcing a smile really make you happier? Why do certain notes or chords have emotional responses? Is urine good for helping lemon trees grow?