A ridiculous but instructive thought experiment involving deep time, plate tectonics, erosion and the slow death of the sun ...
As NASA prepared astronauts for its second mission into space, National Geographic had exclusive behind-the-scenes access for ...
Had one hoped to leave a time capsule for today’s Bostonians in the Permian period 250 million years ago, much less the Pliocene epoch four million years ago , they would have been completely, utterly ...
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