Physicist Stephen Hawking says the chances of disaster befalling planet Earth could rise to a “near certainty” in thousands of years, but warns that we need to be “very careful” over the next century over threats stemming from progress in science and technology.

When asked whether the world would end naturally or be destroyed by humans in an interview with Radio Times, the 74-year-old cosmologist shared his thoughts:”We face a number of threats: nuclear war, global warming and genetically engineered viruses,” Hawking told Radio Times, reports the Telegraph.

More here: http://time.com/4185253/stephen-hawking-disaster-earth/