The United Nations has an alarming assessment of climate change and how countries around the world are not doing nearly enough to slow its damage before it becomes worse. The report finds that the warming effect of greenhouse gases on the planet has increased 43 percent just since 1990. Columbia University’s Dr. Radley Horton joins Judy Woodruff to discuss the problem and potential solutions. 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