Gernot Wagner is, as he admits amusingly, a seeming contradiction: an environmental economist. Readers will perceive a second contradiction: he’s an economist and policy wonk who you would actually want to talk to at a party.  Unintended consequences are always a bugaboo with government policy.  Wagner explains  in his new book But Will the Planet Notice, How Smart Economics Can Save the Worldwhy the no expenses spared aspect of the Endangered Species Act makes it do more harm than good, but why a cap and trade is imperative.  . . . more>>