Atlantic coast under threat as tar balls wash up in Florida Keys.

Zero emissions? That depends on where you get the electricity to charge your car.

On Earth Day 's 40th anniversary, John Kerry warns that climate change is the environment's biggest hurdle yet.

Photographer continues his decade-long documentation of our dependence on oil.

Biannual Environmental Performance Index unveiled at the World Economic Forum.

Converted shipping container provides sustainable shelter for Boy Scouts at Catalina Island campground.

School adds weeding to reading and writing.

Production starts on important doc investigating the American hunger problem.

Factories, power plants and landfills face crackdown with EPA's new ozone proposal.