Stephen Hawking: We Are Close to the Tipping Point Where Global Warming Becomes Irreversible - discu.eu

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Stephen Hawking: We Are Close to the Tipping Point Where Global Warming Becomes Irreversible https://futurism.com/stephen-hawking-we-are-close-to-the-tipping-point-where-global-warming-becomes-irreversible/ 48 comments 3/7/2017 politics