U.S. Top Scientist: World Must Act Now to Reverse Climate Change

“The universe needs eventually to totally decarbonize,” says John Holdren, Obama’s scholarship advisor. Here’s what he says about because we need to do it—and either we can.

Read a finish article:
http://news.nationalgeographic.com/2015/12/151207-climate-change-holdren-white-house-science-paris/