An atmosphere ultraviolet rays from the sun, even from a weak sun, would have tended to break apart any incipient bonds made by molecules. And yet right there—she tapped the stromatolites—you have organisms almost at the surface. It’s a puzzle.
Bill Bryson
An atmosphere ultraviolet rays from the sun, even from a weak sun, would have tended to break apart any incipient bonds made by molecules. And yet right there—she tapped the stromatolites—you have organisms almost at the surface. It’s a puzzle.