Now that most scientists agree human activity is warming the Earth, the central debate has shifted to whether climate change is progressing so rapidly that, within decades, we’ll reach a “tipping point”. more…
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Warming hits ‘tipping point’
An area of Siberian permafrost spanning a million square kilometres—the size of France and Germany combined—has started to melt for the first time since it formed 11,000 years ago. more…
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