Many climate scientists think the massive scale of worldwide fossil fuel use, combined with lackadaisical remedial efforts by governments, may swamp the 2015 Paris Agreement goal of limiting global warming to 1.5 to 2°C above pre-industrial temperatures. Others contend that precipitous drops in the prices of clean energy sources such as solar, lithium-ion batteries and wind could save Earth from a bleak future. As Nature contributor Jeff Tollefson explains, both sides of the issue could be right.
About the Author
Jeff Tollefson writes for Nature from New York City.