General Climate Change

Cities for Climate Protection

Grist

Massachusetts Climate Action

National Resources Defense Council

Northwest Earth Institute

Union of Concerned Scientists

Energy Efficiency

Alliance to Save Energy

American Council for an Energy Efficient Economy (ACEEE)

Consortium for Energy Efficiency

Energy Saving Trust

Energy Star

Rocky Mountain Institute

Tellus Institute

Blogs

Climate 411 (Environmental Defense Fund blog)

Wendy Penner's Climate Blog