On Friday, the federal government released its most dramatic report yet on the effects of climate change. According to scientists, the country is already experiencing serious consequences from rising global temperatures, including more frequent and severe storms, fires and flooding. John Yang talks to Michael Oppenheimer, professor of geosciences and international affairs at Princeton University. Stream your PBS favorites with the PBS app: to.pbs.org/2Jb8twG Find more from PBS NewsHour at www.pbs.org/newshour Subscribe to our YouTube channel: bit.ly/2HfsCD6 Follow us: Facebook: www.pbs.org/newshour Twitter: www.twitter.com/newshour Instagram: www.instagram.com/newshour Snapchat: @pbsnews Subscribe: PBS NewsHour podcasts: www.pbs.org/newshour/podcasts Newsletters: www.pbs.org/newshour/subscribe