"Droughts and heat waves wiped out nearly a tenth of the rice, wheat, corn and other cereal crops in countries hit by extreme weather disasters between 1964 and 2007, according to a new study.

The paper, published Wednesday in Nature, examined data on the effects, over five decades, of extreme temperatures, floods and droughts on national crop harvests.

“People already knew that these extreme weather events had impacts on crop production,” said Navin Ramankutty, a geographer from the University of British Columbia and an author of the report. “But we didn’t know by how much, and we didn’t have a basis for how that might change in the future.”"

Nicholas St. Fleur reports for the New York Times January 6, 2016. [2]