By mousing over and zooming in, you can see what Alberta’s tar sands look like from space ... We know that burning fossil fuels such as oil and gas creates smog that harms our health and ...

The challenge facing engineers is extracting the oil and gas from the tar sands and shale - at present much of it is so difficult to get at that it actually takes more energy to extract it than it ...

Hari Sreenivasan discusses the president's decision… A Canadian company wants to build a $13 billion, 1,700-mile pipeline to carry crude oil from the so-called tar sands region in Alberta ...