Harder to quantify costs also substantial

<p>2009_Freeman_The Climate Winner Argument</p>

<p>

&nbsp;

To be sure, the figures presented above are also highly speculative.

Some are taken from existing studies, but even those figures are crude

estimates. Despite these qualifications, we think the impacts we have

identified and sought to quantify represent a critical set of issues for policy

debates about climate change. We are confident that estimating each

of these effects to be zero (as is often done) is much less accurate than

what we have provided.</p>