| 30 August 2010

photo: sbamueller via flickr Contradicting previous industry- and government-backed studies about the source of pollution occurring downstream from Alberta tar sands projects, a new study in the Proceedings of the National Academy of Sciences says that high levels of lead, mercury, cadmium, zinc and other pollutants are not naturally occurring. As Cree elders have said for some time, Read the full story on TreeHugger