Hawking warns about challenges to environment
Mankind is facing 'the most dangerous time' in its history, warns the renowned British theoretical physicist Stephen Hawking. "We face awesome environmental challenges: climate change, food production, overpopulation; they are a reminder that we are at the most dangerous moment in the development of humanity". The 74-year old Cambridge professor added that we have the technology to destroy the planet on which we live but have not developed the ability to escape it.
North Pole getting Warmer
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