Sarah says that policy should be based on sound science, not politics

"Climate-gate," as the emails and other documents from the Climate Research Unit at the University of East Anglia have become known, exposes a highly politicised scientific circle – the same circle whose work underlies efforts at the Copenhagen climate change conference. The agenda-driven policies being pushed in Copenhagen won't change the weather, but they would change our economy for the worse.

The emails reveal that leading climate "experts" deliberately destroyed records, manipulated data to "hide the decline" in global temperatures, and tried to silence their critics by preventing them from publishing in peer-reviewed journals. What's more, the documents show that there was no real consensus even within the CRU crowd. Some scientists had strong doubts about the accuracy of estimates of temperatures from centuries ago, estimates used to back claims that more recent temperatures are rising at an alarming rate.

This scandal obviously calls into question the proposals being pushed in Copenhagen. I've always believed that policy should be based on sound science, not politics. As governor of Alaska, I took a stand against politicised science when I sued the federal government over its decision to list the polar bear as an endangered species despite the fact that the polar bear population had more than doubled. I got clobbered for my actions by radical environmentalists nationwide, but I stood by my view that adding a healthy species to the endangered list under the guise of "climate change impacts" was an abuse of the US Endangered Species Act. This would have irreversibly hurt both Alaska's economy and the nation's, while also reducing opportunities for responsible development.

Our representatives in Copenhagen should remember that good environmental policymaking is about weighing real-world costs and benefits – not pursuing a political agenda.