Actress Sigourney Weaver calls for action on ocean acidification.

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

Wood Turner, head of Climate Counts, discusses the relationship between the media and the environment.

A Polish architecture firm's visionary concept for a net-zero skyscraper.

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

Japanese artist Chiharu Shiota contemplates the connectedness of things...visible and not.

H&M concedes that GM cotton could have slipped into its organic lines.

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

School adds weeding to reading and writing.