Hawking: We Need to Leave Earth

Renowned scientist Stephen Hawking says we have 1000 years left on Earth before all the planet's resources will be used up. Laci looks at the problems we'll face and Hawking's solution to saving humanity.
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"Hawking: Mankind has 1,000 years to escape Earth"
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"Renowned British physicist Stephen Hawking warns human beings won't survive "without escaping" from the "fragile" planet."
"Stephen Hawking"
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