“The United States is one of the world’s biggest consumers, and U.S. policies can have global environmental effects. As of 2013, the world’s population would need 1.7 Earths to support its demands on renewable natural resources, according Global Footprint Network, a nonprofit organization that calculates human demands on the planet’s ecosystems.”
Link: https://www.washingtonpost.com/classic-apps/we-would-need-17-earths-to-make-our-consumption-sustainable/2017/05/04/2b2c2de8-30e2-11e7-8674-437ddb6e813e_story.html?utm_term=.ee792acff559