In a warming world, the most important natural resource is fresh water. Yet, as the price of crude oil soars past $100 a barrel, our insatiable addiction runs the risk of polluting 4.2 percent of ...

As oil has become scarcer and more expensive, oil companies have begun seriously pursuing a politically charged method of oil extraction in Canada. The ­world’s second-­largest oil reserve lies under ...

ONE of the bleakest scenes of man-made destruction is the strip mining of oil sands in the forests of Alberta, Canada. The sand is permeated with natural bitumen, a type of petroleum with the ...