NASA climate scientist arrested in Keystone XL pipeline protest
February 14, 2013, 9:47 a.m. by Jeanna Bryner, LiveScience
The propose pipeline would carry tar sands, which environmental groups call one of the dirtiest types of oil.
Obama needs to face climate change, reject Keystone pipeline
November 13, 2012, 3:17 p.m. by Guest Columnist
Climate activist Bill McKibben says now is the time for the administration to stand up to the richest industry on Earth.
'Pipe Dreams': How TransCanada's Keystone XL oil pipeline endangers America
November 23, 2011, 1:46 p.m. by Gerri Miller
Narrator Daryl Hannah, filmmaker Leslie Iwerks and others discuss the pipeline battle.