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Dave Roberts

Climate Change Made Simple

Dave Roberts is an editor with Grist. His environmental journalism is always up-to-date and scientifically literate. This short TED talk delivers exactly 'what it says on the tin'. Business-as-usual, our present course, is leading to certain catastrophe. The existence of planetary positive feedback systems, such as the Arctic sea-ice and Siberian permafrost, means there is a genuine existential threat that warming could become irreversible. To stabilize temperature, global climate-warming emissions must peak within 5 to 10 years. Every year we delay corrective action means we will incur another $500B in emergency costs. Don't miss this one.

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