A Climate for Not Much Change

The Kyoto pact to reduce greenhouse-gas emissions was hobbled from the start by politics, say economists, who propose various new plans to clear the air

In the long-ago world of February 1997, more than 2,500 economists, including eight Nobel laureates, signed a short statement on climate change. The statement declared that global warming was a serious risk, that it was possible to reduce greenhouse-gas emissions without wrecking the world economy, and that "market mechanisms such as