If the human species is to avert extinction, it's got just 100 years to leave Earth and colonize a new planet. That's according to noted theoretical physicist Stephen Hawking, who makes the prediction in the upcoming BBC series "Expedition New Earth," set to air later this year as part of its reignited Tomorrow's World programming. "Professor
Stephen Hawking: Humans Have 100 Years to Get Off Earth to Survive
“Professor Stephen Hawking thinks the human species will have to populate a new planet within 100 years if it is to survive. With climate change, overdue asteroid strikes, epidemics, and population growth, our own planet is increasingly precarious.”