On Sunday Feb. 14, we joined 40,000 others at the Washington Monument for a rally and march to the White House to protest the proposed Keystone XL pipeline, which would stretch from the tar sands of Alberta Canada to the Gulf of Mexico.

Despite the brutally cold weather and winds, the mood of the diverse crowd was positive and determined. One protester from Michigan carried a sign showing the massive 1 million gallon tar sands oil spill into the Kalamazoo (Michigan) River, an environmental disaster that has yet to be adequately cleaned up.

The Keystone pipeline will bring dirty tar sands oil approximately 3,000 miles across the entire United States to the Gulf, risking similar spills. Tar sands oil is a type of oil which produces greenhouse gas emissions that are three to five times higher than for conventional oil.

NASA's Jim Hansen, an eminent environmental scientist, says the Keystone pipeline would sound the death knell for the world's climate. Please join 350.org and the Sierra Club in convincing President Obama to stop the Keystone pipeline.