If humanity doesn't become a truly spacefaring species in the next five centuries or so, we may well go extinct, Stephen Hawking said, according to media reports.
During a video presentation Sunday (Nov. 5) at the Tencent Web Summit in Beijing, the famed cosmologist warned that the ever-rising human population, and its mounting energy needs, could render Earth uninhabitable by the year 2600, according to the British newspaper The Sun.
Hawking therefore advised that we get our act together and "boldly go where no one has gone before," The Sun reported.
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