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.
Adapting to the damaging effects of climate change, plants are gradually moving to where temperatures are cooler, rainfall is greater, f...
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.