Artists give Rio community a radiant makeover.

Zero emissions? That depends on where you get the electricity to charge your car.

Progressive regulations will eliminate most fast food packaging from the landfill.

Sneaker giant ditches the shoebox for a more sustainable alternative.

Clever urban hack created by young L.A. duo encourages people to replant their neighborhoods.

Canadian environmentalist David Suzuki offers his take on the greenness of the games.

Photographer continues his decade-long documentation of our dependence on oil.

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