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As we’re just two degrees away from a climate catastrophe, we'll reach the thresAs we’re just two degrees away from a climate catastrophe, we'll reach the threshold for irreversible environmental damage within 40 years. But we have the power to prevent it. David Attenborough takes a stark look at the facts surrounding climate change in today's world. This is the greatest challenge we've ever faced and the human race can rise to it.……详情