The Evolution of Lungs
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I hope you enjoyed the programme. Hello, the evolution of lungs and of the first breath can be traced back 400 million years to when life spread from rock pools and swamps onto land, as some fish found evolutionary advantage in getting their oxygen from air rather than water. Breeding with lungs may have started with fish filling their mouths with air and forcing it down into their chests like frogs do now. But slowly their swimming muscles adapted to work their lungs like bellows. And while lungs developed in different ways, there are astonishing continuities.
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