JIM WEST / SCIENCE PHOTO LIBRARY JIM WEST / SCIENCE PHOTO LIBRARY
Editorial use only.
Protest against tar sands, Detroit, Michigan, USA. Environmentalists rally outside the Marathon Petroleum refinery to protest the transportation and refining of tar sands oil from Alberta, Canada. The Marathon refinery has been expanded to process tar sands oil, which environmentalists say contributes more to pollution and climate change than conventional crude oil.
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