Associated Press: Five busloads of Mainers are taking part in a demonstration in Washington that's being described as the largest climate rally ever in the U.S.
Tens of thousands of people are expected at Sunday's Forward on Climate rally on the National Mall urging President Barack Obama to take action on climate change and reject the Keystone XL oil pipeline that would carry oil derived from tar sands in western Canada to refineries along the Texas Gulf Coast.
Sierra Club Maine says it chartered four buses...