Guardian: America’s environmental groups have given up on getting climate change legislation through Congress at a time of Republican ascendancy, and have downsized to a series of more modest goals like fuel economy. In a sign of that strategy reshift, 20 environmental groups launched a new campaign yesterday to press Barack Obama to propose far more ambitious fuel efficiency and pollution standards for cars of 60mpg by 2025. Meanwhile, Clean Energy Works, a coalition of 80 grassroots …