Climate advocates and representatives from the Rosebud Sioux Tribe in South Dakota protest against the Keystone XL pipeline in front of U.S. Senator Mary Landrieu’s home in Louisiana. (Reuters)

http://www.cbc.ca/radio/the180/paris-attacks-why-keystone-was-a-powerful-symbol-and-robot-doctors-1.3316988/keystone-xl-why-one-pipeline-answered-for-them-all-1.3316999