SACRAMENTO, Calif. -- California regulators adopted the nation's first energy-efficiency standards for televisions yesterday in hopes of reducing electricity use at a time when millions of U.S. households are switching to power-hungry, wide-view, flat-screen, high-definition sets. (11/19/2009)

State and federal agencies are checking southwestern Pennsylvania streams for the non-native, golden algae that had a role in killing aquatic life in 30 miles of Dunkard Creek in September. (11/18/2009)

WASHINGTON -- Buried in the text of yesterday's joint declaration between the President Barack Obama and Chinese President Hu Jintao was a significant climate announcement: The Obama administration will offer concrete emission reduction targets as part of next month's negotiations, as long as the Chinese offer a climate proposal of their own. (11/18/2009)

HARRISBURG -- Historical sites will be shuttered, the wait for government services will be longer, swimming and camping seasons at state parks will be shorter, and hundreds of state employees will be looking for new jobs. (11/17/2009)

The building that you work in may contribute more greenhouse gas emissions than the car you drive to work each day. (11/17/2009)