This week we present two stories about being the one who is there when it happens.Part 1: Journalist Sarah Kaplan normally covers the science beat, but when tragedy strikes in Las Vegas, she takes on an assignment unlike any she's had before.Part 2: While covering the devastating impact of an earthquake in Thailand, journalist Maryn McKenna reflects on tragedy in her own life.Sarah Kaplan is a reporter at the Washington Post covering news from around the nation and across the universe.Maryn McKenna is an independent journalist who writes about public health, global health and food policy. She is a columnist for WIRED’s Ideas section and a Senior Fellow of the Center for the Study of Human Health at Emory University. She is the author of the 2017 bestseller BIG CHICKEN (tiled PLUCKED outside North America), SUPERBUG, and BEATING BACK THE DEVIL; her TED talk, “What do we do when antibiotics don’t work any more?”, is closing in on 1.8 million views. She lives in Atlanta. Learn more about your ad choices. Visit megaphone.fm/adchoices