Cool it

A startling book that reshapes the debate about global warming and offers a moderate approach to meeting its challenges.Bjorn Lomborg argues that many of the elaborate and expensive actions now being considered--the Kyoto Protocol, for example--have a staggering potential cost of hundreds of billions of dollars, but, ultimately, will have little impact on the world's temperature. He suggests that rather than institutionalizing these programs to "cool" the earth's temperature 100 years from now, we should focus our resources on some of the world's most pressing immediate concerns, such as:…