richard ling the president of the american meat institute himself. the idea of banning nitrite forever buried. the experiment base study on two thousand rats ended up in the trash can. and after that the same fate would await every scientific publication calling nitrites into question. if you're wondering how the interest of industry can systematically win against what's at stake in public health the following will enlighten you. fifteen years after the victory of reagan and the media industrialists a new study shook america to the core. if it's not one thing it's another a study finds a link between hot dogs now and cancer put yourself in the shoes of the average american joe at the time. you and your family are eating hot dogs at the shopping mall or in the street just as usual. the effect was immediate in a matter of days dog sales fell by eight percent. and given the size of the american market that represented millions of dollars less for the food industry. the author of a hot dog study that caused sales to plummet with susan preston mark. she's

richard feldman, author of "ricochet confessions of a gun lobbyist." thank you for coming on. >> thank you for having me. >> a new episode of "this is life with lisa ling in on the secret to ageless skin. take the olay 28 day challenge. millions of real women see results starting day 1. "there is not a friend i have, that will not own this product"" visible results or your money back olay. ageless. ♪ ♪ hi! leaving a career to follow a calling takes courage. a personalized financial strategy can give you confidence to take the next step. hi guys! aw yeah! see how access to j.p. morgan investment expertise can help you. chase. make more of what's yours. . >>> body cam video, the police shooting death has sparked outrage from activists in utah. video shows a salt lake city police officer shooting a man after he was detained back in august. the video has just been made public. we want to warn you, this video is graphic. you may find it disturbing. in the video, it comes from three different police body cameras. you see a 50-year-old stopped after riding his bicycle. he takes off running. that's when the officer fires his gun. paula sandeval has been follow