Humans will need to colonize another planet within one hundred years to ensure our survival, according to Professor Stephen Hawking. The astrophysicist has made a new documentary, Expedition New Earth, as part of the BBC’s new science season Tomorrow’s World. In it he will claim that time is running out for Earth and if humanity is to survive climate change, asteroid strikes, epidemics and overpopulation we will need to leave our planet and venture further afield.

In the landmark series, Prof Hawking and his former student Christophe Galfard will travel the world to find out how humans could live in outer space. Prof Brian Cox, the astrophysicist and TV presenter who has been helping curate the series, said: “The original Tomorrow’s World inspired a generation – it certainly inspired me back in the 1970s, but that was a single TV programme. “The 21st century Tomorrow’s World represents so much more – READ MORE