Canada’s tar sands have gained infamy for being one of the world’s most polluting sources of oil, thanks to the large amounts of energy and water use required for their extraction. A new study says ...

SAN FRANCISCO, Aug. 17, 2011 /PRNewswire-USNewswire/ -- Dole and Chiquita were greeted this morning with full-page ads in USA Today calling on the companies to reject extreme fossil fuels from ...

Studies reveal that pollution levels from Canada's Athabasca oil sands are much higher than industry-reported, raising health and environmental concerns. Despite ambitious climate pledges, Canada ...

BRUSSELS (Reuters) - Canada has threatened to scrap a trade deal with the European Union if the EU persists with plans that would block imports of Canada's highly polluting tar sands, according to EU ...

If it is ever built, the Keystone XL Pipeline will exist for one reason: To move Canadian tar sands oil from remote Alberta to refineries in Texas. For the U.S., controversy over the tar sands is ...

Canadian researchers have used the mud at the bottom of lakes like a time machine to show that tar sands oil production in Alberta, Canada, is polluting remote regional lakes as far as 50 miles from ...

While politicians, environmentalists and Big Oil fight over the Keystone XL pipeline, the Bay Area's five refineries have quietly moved toward transporting controversial Canadian tar sands crude oil ...

OTTAWA (Reuters) - Canada will boost monitoring of pollution from its oil-rich tar sands and hopes this will speed up Washington's approval of a proposed $7 billion pipeline to transport heavy ...

Southeast Texans have no reason to oppose a plan to bring tar sands from Canada to Nederland via pipeline. In fact, they should welcome the proposal. The plan meshes with the region's existing network ...

President Obama should not support Canada's request to exempt tar sands development from environmental regulation. Tar sands development is causing tremendous environmental damage to Canada's boreal ...

Thanks to tar sands, Canada ranks third in world oil reserves behind Saudi Arabia and Venezuela. So, what are the tar sands (often called "oil sands"), how did they get there, and how are they ...