NYT: What was once the worst-case scenario for climate change seems much less likely.

Five years ago, the journalist David Wallace-Wells explored a worst-case scenario for climate change: one in which the planet warmed by as much as 5 degrees Celsius by 2100 — causing widespread extreme weather, economic collapse, famine and war. Now, David sees that level of doom as much less likely, he writes in an essay for this Sunday’s climate issue of The New York Times Magazine, where he is a columnist. While 5 degrees of warming once seemed