Extreme weather events such as heatwaves, droughts and heavy rainfall are becoming increasingly likely to occur because of human-caused climate change. That is a conclusion of a report by climate experts that was released recently at the annual meeting of the American Geophysical Union in San Francisco.

Since the first report in 2011, BAMS editor-in-chief Jeff Rosenfeld says, “it feels like a century, in terms of how the science has changed.” The papers are now are much…