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Most of the focus of climate policy has been on efforts to cut down on the carbon we’re dumping into the atmosphere, either by limiting emissions in the first place, or by capturing and storing it. But the Earth itself already does a lot of the latter for us: roughly 60 percent of the carbon dioxide we put into the atmosphere gets taken up by the oceans and terrestrial ecosystems. That has led to worries that land use changes and rising temperatures themselves might start inhibiting the natural carbon sinks . A study published in yesterday’s issue of Science provides some evidence that this may be taking place: droughts over the past decade have caused the amount of CO 2 taken up by land plants to drop

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ArsTechnica