San Francisco's solar initiatives paying off

Turbine plan received first permits

New solar cells reach record efficiency

Ecollywood: Carter Oosterhouse & Tichina Arnold

Political Habitat: Notes from an Earth Day realist

Kiss the upfront costs of solar goodbye

Sun rises on ancient ritual

Ecollywood: Colbie Caillat & Christian Kane

The lie of Three Mile Island

Political Habitat: Hanging out the 'Now Hiring' sign

Ecollywood: Chuck Norris and Polly Draper

Greening the economy: From ruin to revival