...the partisan divide on environmental policy has been growing ever wider. Just eight years ago the G.O.P. nominated John McCain, whose platform included a call for a “cap and trade” system — that is, a system that restricts emissions, but allows pollution permits to be bought and sold — to limit greenhouse gases. Since then, however, denial of climate science and opposition to anything that might avert catastrophe have become essential pillars of Republican identity.
via www.nytimes.com