U.S. mayors took a stand against global warming-causing pollution at a conference in Miami this week, noting that fuels derived from tar sands, liquid coal and oil shale emit “even greater amounts of global warming pollution than conventional petroleum sources.”

The U.S. Conference of Mayors adopted a policy resolution calling for cities, communities and the federal government to “take actions to reduce global warming pollution.” The resolution takes particular aim at Canadian tar sands oil production. “[T]he production of tar sands oil from Canada emits approximately three times the carbon dioxide pollution per barrel as does conventional oil production and significantly damages Canada’s boreal forest ecosystem — the world’s largest carbon storehouse…[T]he continued production and purchase of these higher-carbon unconventional or synthetic fuels slows the United States’ transition to clean, renewable energy sources.”

The resolution calls for life cycle analyses to evaluate greenhouse gas emissions from the use of fuels, including unconventional and synthetic fuels, and supports the creation of federal and state guidelines for tracking the origin of various types of fuel in order to enable the analysis.

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