tar sands

Seeing 2 Kinds of Green Amid the Black Gold of Canada's Oil Sands

When it comes to energy, what we desire is a source that's cheap, reliable and clean -- but so far, there's no way to get all three attributes in one abundant source. And nowhere are the trade-offs that surround those competing desires more obvious than in Canada's oil sands.

Is Oil Output Peaking or Not? Either Way, Cheap Oil Is Gone

Proponents of the peak-oil theory can muster studies and statistics backing their claim that declining global oil output is nigh. Critics point to new technologies and unconventional oil fields as saviors. Either way, a return to the days of $1.50-a-gallon gasoline isn't going to happen.