Stephen Hawking has warned humanity that it is likely to wipe itself out — unless it manages to escape the Earth.

Unfortunately such space colonies aren’t going to arrive any time soon, according to the Cambridge professor. “We will not establish self-sustaining colonies in space for at least the next hundred years, so we have to be very careful in this period,” the physicist said.

As such, we should look to “recognise the dangers and control them” to ensure our continuing survival, he said.

Professor Hawking warned that those dangers could come from nuclear war, global warming and genetically-engineered viruses, the BBC reported. The chances of those things are increasing, he said — and there is perhaps little humanity can do about it.

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