it’s difficult to extract and thus requires more energy and emissions of climate-warming gases than drilling for conventional oil. Across their life cycle, emissions from oil sands are about 30 ...

The mineable oil sands, however, represent only 20 percent ... Another in situ method is the Vapor Extraction Process (VAPEX) method, which has not been deployed commercially to date.

As the pressure intensifies to produce more tar sands oil, including in the United States, the Center is stepping up to keep it in the ground. In early 2014 we launched an aggressive, coordinated ...

Canada's Alberta oil sands hold the world's second-largest crude reserves, but the cost of extraction is high. This is because the process of separating the oil from the sand is both energy and ...

The Center seeks to prevent any oil shale or tar sands development on public lands, including the unacceptable extraction and combustion of oil, the consumption of water and energy attending that ...

I used to be an oil executive. Here’s how market forces, not politics, killed the oil boom—and why new pipelines won’t save the country. As part of his campaign, Conservative leader Pierre ...

Recovering usable petroleum from oil sands is about seven times more difficult than getting it from other sources, but rising energy costs have caused a flurry of new investment into this energy ...

Production of liquids from tar sands is nothing new ... So, the world's economy is diverting resources in various forms to oil extraction in order to keep the vital supply of liquid fuels to ...

Cutting ventures in oil sands is a wise move by Shell, especially considering associated extraction methods are more expensive and polluting than conventional techniques. This, coupled with the ...