From Solve Climate News:

New scientific research has found increased levels of some carcinogenic chemicals linked to oil sands mining in the Athabasca River, refuting long-held industry and government claims that natural sources are responsible for the pollutants.

The chemicals, called polycyclic aromatic hydrocarbons (PAHs), have been shown to cause cancer in laboratory animals as well as other health problems.

PAH concentrations in Athabasca River sediments located downstream of oil sands projects increased 41 percent between 1999-2009, according to the study, published earlier this month in the journal Environmental Science and Technology.

More.

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