Canadian tar sands pollution is up to 6,300% higher than reported, study finds

Call for companies to clean up their mess' as Athabasca oil sands emissions vastly exceed industry-reported levels

Toxic emissions from the Canadian tar sands - already one of the dirtiest fossil fuels - have been dramatically underestimated, according to a study.

Research published in the journal Science found that air pollution from the vast Athabasca oil sands in Canada exceed industry-reported emissions across the studied facilities by a staggering 1,900% to over 6,300%.