Am I a snake: my yawns spray saliva!

Ask the Naked Scientists

English - January 22, 2021 08:48 - 20 minutes - 19.2 MB - ★★★★★ - 60 ratings
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This week, journey times to Mars, how stars come by the matter inside them, why some people feel compelled to eat paper, how coronavirus antibody levels correlate with Covid-19 severity, whether water really goes down the drain in different directions on opposite sides of the Earth, and why a yawn produces a spray of saliva. Join Dr Chris Smith and Azania Mosaka for the answers. Like this podcast? Please help us by supporting the Naked Scientists