Guest David Rehkopf is an expert in population health who says that where we live is one of the strongest influences on how long we live. While we know diet and health care are important, it has been tough to tease out what about these places allows people to live longer and healthier lives. By examining environmentally induced changes in DNA, we may be able to more quickly and more accurately quantify what aspects of environments promote longer, healthier lives, Rehkopf tells host Russ Altman in this episode of Stanford Engineering’s The Future of Everything podcast.