Nick Lane, a British biochemist and writer, is professor of evolutionary biochemistry at University College London. His books include The Vital Question: Energy, Evolution, and the Origins of Complex Life and Life Ascending: The Ten Great Inventions of Evolution.
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Three hundred million years ago, in Carboniferous times, dragonflies grew as big as seagulls, with wingspans of nearly a meter. Researchers claim they could have flown only if the air had contained more oxygen than today—probably as much as thirty-f... SEE MORE