Scientific American: The Keystone XL Pipeline would move enough tar sands oil to result in another 181 million metric tons of greenhouse gases entering the atmosphere yearly. A new report prepared by environmental group Oil Change International (OCI) analyzes what the climate change impacts of the proposed pipeline might be.
Consultants hired by the U.S. State Department determined that completing the Keystone XL Pipeline that would transport tar sands from Canada to Texas would have no impact on greenhouse gas emissions,...