AMBOY, CALIFORNIA - SEPTEMBER 22:  A 'Drifting Sand' sign is posted in the Mojave desert on September 22, 2019 in Amboy, California. California's Fourth Climate Change Assessment found that temperatures of the inland deserts of Southern California, including the Mojave desert, are expected to continue climbing. According to the report, average daily highs could increase as much as 14 degrees this century if greenhouse gas emissions keep rising.  (Photo by Mario Tama/Getty Images)