The only Republican candidate with comprehensive global warming plan

The only Republican candidate with comprehensive global warming plan. League of Conservation Voters calls him a "leader" on climate issues; Republicans for Environmental Protection, national conservation organization, endorsed him.

Helped introduce in 2003 one of first Senate bills on climate change. Bill was reintroduced in '05 and '07; goal to reduce greenhouse gas emissions by 65 percent by 2050. Would set up cap-and-trade system, use some funds from emissions permit auction for nuclear power.

Prefers "profit-motive, free-enterprise-system-driven green technologies." Supports use of cleaner coal technology if it reduces greenhouse gas emissions and includes carbon capture and storage. Backs higher vehicle fuel efficiency standards but sets no target. Supports alternative bio-fuels, but not subsidies for ethanol.

Opposes drilling in Arctic National Wildlife Refuge. Supports protecting national parkes.

"Ensuring clean air, safe and healthy water, sustainable land use, ample greenspace —and the faithful care and management of our natural treasures, including our proud National Park System — is a patriotic responsibility."