Dan Esty, the head of Yale's Center for Environmental Law and Policy, speaks about coal, gas and oil companies' reluctance to adapt in the face of climate change issues on American Public Media's Marketplace."He says the gas, coal and oil industries see their economic survival at stake and have spent big bucks to defend their dominance.DAN ESTY: 'And they've done it in a variety of ways, traditional lobbying, creating kind of a false impression of lack of clarity around the science, and they've done it the old-fashioned way, with big campaign contributions.'" To read the full transcript or listen to the interview, please click here.