About 15,000 workers employed at dozens of hotels across Los Angeles and Orange counties have walked off the job, demanding better pay and benefits.  As summer temperatures start to hit triple digits, farmworkers in the Central Valley are especially vulnerable to the toll of excessive heat. And looking ahead it’s not going to get any easier because of climate change, Reporter: Tyche Hendricks, KQED Learn more about your ad choices. Visit megaphone.fm/adchoices