The choices within the climate change debate are extraordinarily difficult. Imperfect people, not pure science, must decide our course of action.

Can international regimes be effective means to restrain carbon emissions?

For more than twenty years, policymakers have struggled to find ways to reduce greenhouse gas emissions enough to stop global climate change. Congress is likely to enact federal climate legislation in 2009, but many scientists fear that emissions reductions may not occur quickly enough to prevent significant warming. Some scientists...

While average global temperatures rose slightly during the twentieth century, we do not have sufficient evidence to know definitively whether that rise was man-made or natural.

Will George Bush salvage his legacy on climate change?

Al Gore"s extreme proposals on climate change are smart politics--and bad policy.

Climate policy should focus on human welfare, not just reducing global greenhouse gas emissions.