By Tia GhoseLiveScienceFrom catastrophic climate change to hostile aliens, Hollywood routinely envisions apocalyptic endings to humanity’s stint on planet Earth.For instance, in the movie “After Earth,” which opened in theaters Friday, a series of earthquakes, floods, tsunamis and other natural disasters makes the planet inhospitable to humans, who resettle on a new world called Nova Prime …
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Forget the movies: 9 real ways the world could end