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

Age-old practice breathes new life into abandoned property.

Actress Sigourney Weaver calls for action on ocean acidification.

Sneaker giant ditches the shoebox for a more sustainable alternative.

Global forest loss slowed over the past decade, with less logging in the Amazon and widespread tree planting in China.

A proposal to ban the export of the critically endangered bluefin tuna has been rejected at a UN wildlife meeting.

Beleagured Toyota president faces the music...sort of.

But wildlife conservation groups oppose the project, the New York Times reports.

Experts say Asian smog accounts for 29% increase in baseline ozone since 1984.

Denver, Minneaopolis and Boston set to launch bike share programs in 2010.