The Dirtiest Fuel on the Planet August 31, 2011 : 5:38 PM

The leaders of the top environmental groups in the country, the Republican Governor of Nebraska, and millions of people around the country—including hundreds of people who have bravely participated in civil disobedience at the White House—all agree on one thing: President Obama should block a planned pipeline from the tar sands of Alberta to the Gulf of Mexico. 

The tar sands are the dirtiest source of liquid fuel on the planet. This pipeline would be an enormous mistake.  The answer to our climate, energy and economic challenges does not lie in burning more dirty fossil fuels —instead, we must continue to press for much more rapid development of renewable energy and energy efficient technologies and cuts in the pollution that causes global warming.