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Nature has a way of continually surprising us and inspiring awe within us, and it seems there are just as many fantastical wonders t...

9/28/2007

Thompson Files: To Save Humanity

ARLINGTON, Va. -- I know how the world ends, and it isn't with a whimper. You can see humanity's epitaph etched in advance by simply gazing up at the moon on any evening and observing the vast craters created by ancient asteroids hitting the lunar surface.

Earth has suffered many such impacts over its 4.5 billion year history. An extrapolation of lunar data suggests that there have been up to 22,000 asteroid collisions with the Earth creating craters a dozen miles in diameter or bigger. One such impact created the Chesapeake Bay, and someday another will wipe out humanity, assuming some other cataclysm hasn't claimed us first.

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