![]() ![]() Lane takes the reader on an enthralling journey, as gripping as a thriller, as he unravels the unexpected ways in which oxygen spurred the evolution of life and death. This is just one of the puzzles Nick Lane answers in Oxygen. If atmospheric oxygen reached 35 per cent in the Carboniferous, why did oxygen promote exuberant growth, instead of rapid aging and death? Fruit flies raised at twice the normal level of oxygen live half as long as their siblings. Researchers claim they could have flown only if the air had contained more oxygen than today-probably as much as 35 per cent. ![]() Three hundred million years ago, dragonflies grew as big as seagulls, with wingspans nearly a yard across. ![]()
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