Popsugar Living Staying Home Free Online Harvard Classes 15 Free Online Classes You Can Take at Harvard Right Now 29 April 2020 by Hedy Phillips View On One Page Photo 8 of 15 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 8 The Health Effects of Climate Change This course on climate change takes it a step farther and shows you how the global crisis affects human health. Take the The Health Effects of Climate Change course. Previous Next Start Slideshow Staying HomeActivitiesCollege