Rock star went undercover with Greenpeace to protest Arctic drilling

Subterranean park proposed for Manhattan's Lower East Side

We may be broke, but we have our wilderness -- for now

New doc, American Meat, aims to ignite conversation about meat production

We're running out of time, ClimateWorks report argues

EnviroMission project will be twice the size of the Empire State Building

US biofuels, wind, solar, and hydro production on the rise

Traffic planners restrain cars in favor of walking and public transit