London: British physicist Stephen Hawking have warned that humans must leave Earth and to colonise another planet within the next 100 years to ensure survival of climate change, asteroid strikes and overpopulation.


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In a new documentary, Expedition New Earth – a part of the BBC's new science season Tomorrow's World – Professor Hawking and his former student Christophe Galfard will travel the world to find out how humans could live in outer space.


In the series, the British physicist claims that time is running out for the Earth and humanity will need to leave the planet for its survival.


The shows aims to find Britain's greatest invention, by asking the public to vote on the innovation which has been the most influential in their lives, 'The Telegraph' reported.


Last month, Hawking had warned that the aggressive instincts of humans, coupled with the fast pace of growth in technology may destroy us all by nuclear or biological war, adding that only a 'world government' may prevent this impending doom.


Hawking had said that humans may lack the skills as a species to stay alive.


(With PTI inputs)