Professor Stephen Hawking warns 'the end of the world is nigh' and Earth could be engulfed in a 'ball of fire'

Professor Stephen Hawking warns 'the end of the world is nigh' and Earth could be engulfed in a 'ball of fire'  Mirror.co.uk Stephen Hawking - Predicts Earth To Glow Red Hot By 2600 Due To Population Growth - Could It?  Science 2.0 Stephen Hawking Says Humans Must Leave Earth Within 600 Years  NBC ConnecticutFull coverage

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