President Obama is about to decide whether or not to approve the Keystone XL pipeline. This explainer, commissioned by 350.org, examines the "test" he'll use to make this important decision.
Credits: Designed by Tabriz Ghazi and Katie Tonkovich (Newsbound).
Photographs courtesy of The Pembina Institute, 350.org, Sierra Club, and the Associated Press.
First Published: 10/14/2013