Brazilian company develops eco-smart app that saves energy during quick breaks at work

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

The liberals' favorite conservative reverses stance on global warming, saying the science is "not enough" for U.S. action

Sustainability informs Brazilian designer's creations.

Celebrated chef sources sustainable essentials in upstate New York.

Annual study ranks consumer sustainability around the world.

Economic recession blamed for decline.

Report finds dramatic reductions in prohibited logging activities around the globe.

Artists give Rio community a radiant makeover.