Over 3 million people die annually from air pollution. Planting trees can help lower that number. Read more: http://www.vox.com/energy-and-environment/2016/11/4/13510352/planting-trees-pollution-heat-waves Check out The Nature Conservancy report, "Planting Healthy Air": https://global.nature.org/content/healthyair /// Trees help improve public health by cleaning and cooling the air around them. As the threat of climate change steadily increases, planting trees is a fairly simple way city leaders can help stem the negative consequences of rising temperatures and increasing population density. Subscribe to our channel! http://goo.gl/0bsAjO Vox.com is a news website that helps you cut through the noise and understand what's really driving the events in the headlines. Check out http://www.vox.com to get up to speed on everything from Kurdistan to the Kim Kardashian app. Check out our full video catalog: http://goo.gl/IZONyE Follow Vox on Twitter: http://goo.gl/XFrZ5H Or on Facebook: http://goo.gl/U2g06o