Cool It is a riposte to Al Gore's An Inconvenient Truth, a film Lomborg and Timoner say helped whip up an enviro-hysteria in which rational debate has been replaced by emotional rhetoric.
Trouble is, Lomborg is hardly a dispassionate observer - he's an interested player in the debate. And his ideas are nothing if not controversial.
The Danish statistician launched a firestorm a decade ago with the publication of his best seller The Skeptical Environmentalist, which attacked some of the assumptions made by the world's leading environmentalists.
Some critics denounced the book as bad science and Lomborg as a charlatan. Others championed it as a breath of fresh air.
In Cool It Lomborg presents himself as a laid-back, cheerful pragmatist.
He doesn't deny that global warming is real but argues that its effects won't be as dire as some experts claim. And he criticizes most of our efforts to forestall it as unrealistic and too expensive.
Instead, Lomborg says, we should focus our dollars on solving other global problems including malaria, malnutrition, and hunger.
Cool It offers no new insights into the internecine debates in enviro-policy.
Which is just as well.
It is at its best when examining alternative sources of energy and how their development has consistently been thwarted by the energy industry.
It also reminds us how much poverty, sickness, and misery exist outside our pampered lives.
Contact staff writer Tirdad Derakhshani at 215-854-2736 or firstname.lastname@example.org.