01/20/2012 11:16 am ET

With Pipeline Stopped For Now, Tar Sands Battle Continues In California Courts

A high-stakes legal battle is underway in California over whether the state's clean air agency can enforce a first-ever rule to slash carbon emissions in transportation fuels. The fight is being closely watched because the rule could choke global market demand for Alberta's carbon-intensive oil sands at a very precarious time for the industry.

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