Global investment in renewable energy powered to record $257 billion in 2011, according to UN report

German artist creates gravity-defying land art installations

Forget what you heard about clean tech being dead. A new report finds that investment in green technology is booming

What the hell happened?

The political bashing of sustainability is irrelevant to business interests, says Ecomagination VP

Photo project asks the public to document environmental issues and everyday life

How eating consciously can affect global warming

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

But will it cause more problems that it fixes?

Republican governors working to ease environmental rules.