Today the Guardian put a story on its front page about the biggest gamble in human history.
Governments, corporations and pension funds have $6 trillion worth of unburnable carbon assets on the books -- that means that either their investments pay off and the planet tanks, or we avert climate catastrophe and those investments are worthless. -350.org
Needless to say, if Obama allows KeystoneXL, then he is directly complicit in this economic idiocy/global suicide.
A summary and link to the full report is here: http://www.carbontracker.org/wastedcapital