WASHINGTON -- Senator Bernie Sanders, a member of the Environment and Public Works subcommittee chaired by Senator Joseph Lieberman, said recently that he would work to strengthen legislation on global warming proposed by Lieberman and Senator John Warner. I look forward to playing an active role in strengthening the legislation they introduced today. The issue were dealing with here is not Democrat versus Republican, Progressive versus Conservative. What were dealing with are the laws of physics, and its absolutely imperative that we produce legislation which the scientists tell us that we need, legislation strong and effective enough to reverse global warming and prevent catastrophic damage to our planet. The most recent studies, Sanders added, have found that scientists had underestimated the rapidity of changes caused by global warming.