Keystone climate impact could be 4 times U.S. State Dept. estimate, study says (8)

Canadian Television 2014.08.10 21:26
This March 17, 2014, file photo shows a stake in the ground wrapped with tape that marks the route of the Keystone XL pipeline in Tilden, Neb. The much-debated Keystone XL pipeline could produce four times more global warming pollution than the State Department has calculated, according to scientists at a Swedish research facility.
PIPELINE, KEYSTONE, POLLUTION, EMISSION, SAND, TON, Erickson, Obama, Fang, Tol, Lazarus, Caldeira, Canada, USA, Stockholm