Dear Friend,

As Congress prepares to debate new legislation to address the threat of climate change, opponents again claim that the costs of adopting the leading proposals would be ruinous to the U.S. economy. The world's leading economists who have studied the issue say that's wrong. And you can find out for yourself.

Today, Yale's School of Forestry & Environmental Studies posted a new website developed by economics professor Robert Repetto. In a way that anybody can easily understand, it synthesizes the results of thousands of policy simulations from 25 economic models being used to predict the economic impacts of reducing U.S. carbon emissions. To try this new website, just click on http://www.climate.yale.edu/seeforyourself.

This website identifies the seven key assumptions accounting for most of the differences in the models' predictions. It shows that even under the most unfavorable assumptions regarding costs, the U.S. economy is predicted to continue growing robustly as carbon emissions are reduced. Under more favorable assumptions, the economy would even grow more rapidly if emissions are reduced than if they are allowed to continue to increase as in the past.

Even better, this new website allows site visitors to decide how likely they think each of the seven key assumptions are, and on that basis see for themselves what economic impacts all the leading economic models would predict, if carbon emissions are reduced by specific percentages over the next two decades. If you visit this site, you can make your own assumptions about the key factors that will influence the costs of stopping climate change and see the results.

We urge you to click on and use this new analysis. Tell your associates and contacts about it and create links to it on your own website.

Sincerely,
Gus Speth
Dean, Yale School of Forestry & Environmental Studies

PS. While I'm at it, you might also want to look at this: http://environment.yale.edu/climate/