It's still entirely unclear if the Keystone XL pipeline can be built and managed safely. Moreover, its construction would delay the critical conversion to a non-fossil fuel based economy on which our future depends. Secretary of State John Kerry, who once spoke out bravely against the Vietnam War and who has stressed the dangers of climate change, could stop it. Sometime in the next couple of months, the State Department will issue a final environmental impact statement on the pipeline, followed by a determination on whether it is “in the national interest."

Join Bill McKibben and many others in signing The Nation's open letter urging Secretary Kerry to consider his legacy and to find the courage to reject the Keystone XL pipeline. After that, take the opportunity of the State Department's official public comment period on the Keystone XL Pipeline to inundate officials with letters of opposition. The eco-advocacy group 350.org is collecting comments and will deliver them directly to the State Department.

In his recent Nation article, Bill McKibben examines John Kerry's Fateful Decision on the Keystone Pipeline.

If you know someone who doesn't know about Keystone, this is a good video to send their way.