James Hansen slams Keystone XL Canada-U.S. Pipeline: “Exploitation of tar sands would make it implausible to stabilize climate and avoid disastrous global climate impacts” | ThinkProgress

James Hansen slams Keystone XL Canada-U.S. Pipeline: “Exploitation of tar sands would make it implausible to stabilize climate and avoid disastrous global climate impacts” | ThinkProgress: "The Canadian tar sands are substantially dirtier than conventional oil as the chart above shows (longer analysis here).  They may contain enough carbon-intensive fuel to make stabilizing atmospheric concentrations of carbon dioxide at non-catastrophic levels all but impossible.
And that is the point of Dr. James Hansen in a must-read essay on the proposed Keystone XL Pipeline to bring that dirty fuel into this country, “Silence Is Deadly: I’m Speaking Out Against Canada-U.S. Tar Sands Pipeline.”"