Last year was one of the deadliest on record for migrants. Tougher enforcement is pushing some to try swimming around the wall along the southern border. And that's prompted lifeguards on both sides of the border to respond. Reporter: Gustavo Solis, KPBS The pollutants from venting and flaring at oil and gas facilities in California are leading to 13 deaths a year, and worsen asthma in 1,800 children. A new study shows Los Angeles, San Bernardino and Kern counties suffer the worst outcomes, and low income communities are disproportionately affected. Reporter: Kristel Jandra, KQED Learn more about your ad choices. Visit megaphone.fm/adchoices