642787 external_news 1610392738 1610474690 Cutting down on greenhouse gases to the point where they aren't accumulating in the atmosphere isn't enough to corral climate change; science needs to focus on actively removing carbon dioxide as well. That's according to a group of scientists who want more work on climate restoration, not just net-zero greenhouse gases. Kim Cobb weighs in on whether it may already be too late for some aspects of the environment. 

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