Blumenthal’s efforts as Connecticut’s attorney general on behalf of environmental causes, including joining bipartisan fights to block controversial energy projects for Long Island Sound, recently earned him the Sierra Club’s endorsement.

McMahon, on the other hand, is uncertain about the role humans play in climate change, is open to downsizing the Environmental Protection Agency, and condemns Blumenthal’s past support for federal pollution standards despite Connecticut’s having led the way in cap-and-trade initiatives under a Republican governor.

via Stark differences between McMahon, Blumenthal on energy, environment – Connecticut Post.