What must be done to stop climate change?

This background of overwhelming public concern helps situate the upcoming national demonstration in Washington, D.C., on February 17, against the building of the Keystone XL tar sands pipeline from Canada to Texas. If built, the pipeline will carry 800,000 barrels a day of highly-polluting tar sands oil, effectively dealing a death blow to hopes of preventing rampant climate change. The demonstration has added significance as activists attempt to draw a line in the sand and pose the first big litmus test for the second term of Barack Obama.