NEW HAVEN, CT - OCTOBER 08: Yale Professor William Nordhaus attends a press conference after winning the 2018 Nobel Prize in Economic Sciences at Yale University on October 8, 2018 in New Haven, Connecticut. Professor Nordhaus' research has been focused on the economics of climate change, economic growth, and natural resources. (Photo by Eduardo Munoz Alvarez/Getty Images)
Cracked mud is pictured at sunrise on the dried shores of Lake Gruyère, affected by continuous drought, near the western Swiss village of Avry-devant-Pont. (Fabrice Cofrin/AFP/Getty Images)