The science behind climate change and the dangers it poses for our collective future remain intact. Enlightened business leaders should step up their attempts in clean energy sectors; after all, the reward will be huge.
Changing weather patterns will inject an element of chaos into the already-fragile existences of the world's poorest people. The Millennium Development Goals are as good a framework as we have to craft a path forward.
Promoters of dirty air have been vilifying the Clean Air Act since it was just a notion in a congressional subcommittee, four decades ago. They carry on with the same fear-mongering today, peddling the same old falsehoods.