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We depend on plants much more than we care to admit, as they absorb a quarter or even more of our fossil fuel emissions. But, if we don’t stop or at least slow down global warming, up to half of the world’s forests and grassland could exceed their peak carbon dioxide (CO2) uptake in the next two or three decades, according to a new study — a tipping point that would set our climate on a crash course for centuries to come. Image credit: Flickr / Megan Gardner It’s like Earth has a fever that’s affecting plants’ ability to function normally, says lead author Katharyn Duffy in a stat...

 E-Mail IMAGE: Graphic depicting the temperature tipping point at which Earth's plants will start decreasing the amount of human-caused carbon emissions they can absorb. view more  Credit: Victor O. Leshyk/Northern Arizona University Earth's ability to absorb nearly a third of human-caused carbon emissions through plants could be halved within the next two decades at the current rate of warming, according to a new study in Science Advances by researchers at Northern Arizona University, the Woodwell Climate Research Center and the University of Waikato, New Zealand. Using more than ...