Obama administration shuts down pipeline project, welcoming a new era of clean energy.
Read more...The vote was a nail biter to the last second.
Read more...Alberta's tar sands appear an economic miracle to some but their extraction and shipment will cause untold damage.
Read more...More than four dozen were arrested Wednesday.
Read more...A look into the science and flip-flop politics of the Keystone XL pipeline.
Read more...Keystone XL pipeline protesters encircled the White House Sunday.
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