What Do Rockets Push Against in Space?

Sep 27, 2013 · 18 min · Episode 246 · 18.1 MB

0:00-18:51

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What colour were human ancestors? What does a rocket push against in space to propel itself forward? Why does yawning make me cry? How do bats navigate? Can fuel cells run on alcohol? Why are 90% of people right handed? How genetically related would the children of two sets of identical twins be? Plus, noses grown on foreheads and how rotating antibiotic drugs can prevent bacterial resistance... Like this podcast? Please help us by supporting the Naked Scientists