Still, I don't think money is the reason Gore has transformed himself from a man who wrote that fighting global warming would require "sacrifice, struggle and a wrenching transformation" from committed Americans to a movie figure who argues that reducing greenhouse gases can be profitable.
As Singer noted, the Kyoto Protocol on global warming was supposed to be a first step to reductions in greenhouse gases of more than 50 percent.
For his part, Singer believes that higher CO2 levels follow higher temperatures. Singer also understands that if enviros want to halve greenhouse gases, there are two ways to do it. "You can collapse the world economy," or, as the cow-gas story suggests, you destroy half the population. "Then you could reduce emissions by 50 percent."
I marvel at those who consider themselves to be in sync with the sage voices of science when it comes to global warming, then argue that America can reduce greenhouse gases with better light bulbs and hydrogen fuel cells.