Where is the "Sound Science"?

As Derrick Z. Jackson reminds us in this Boston Globe article, President Bush has told us he needs to see the "sound science" on global warming before joining the rest of the world in combating it. A recent report, the Millennium Ecosystem Assessment, commissioned by the United Nations relied on 1,360 experts from 95 countries and devoted $24 million to compile a hard science perspective on the human impacts to our planetary ecosystem (including global warming). The Bush administration to date has been curiously silent on the sobering conclusions of this assessment.