One way, many scientists and scholars say, is to make nonpolluting energy sources cheaper than the unfettered burning of abundant fossil fuels.
But the challenge of cleaning up vivid environmental despoliation like untreated sewage and litter is far different than the challenge of building public support to move rapidly away from the unfettered burning of abundant fossil fuels providing more than 80percentt of the world's energy.
[ Andy Revkin – From the first paragraphs, Mr. McCain is clearly making climate change one of a mix of issues requiring a sustained push away from unfettered burning of fossil fuels, rather than a centerpiece, as in the arguments made by former Vice President Al Gore.
Dr. Hansen said the United States must begin a sustained effort to exploit new energy sources and phase out unfettered burning of finite fossil fuels, starting with a moratorium on the construction of coal-burning power plants if they lack systems for capturing and burying carbon dioxide.
