Backward thinking poses a threat to a wind-energy tax credit that's helping to wean the country off fossil fuels

The Nature Conservancy forges surprising partnerships to further its mission

Swedish capital's subway system gets an artistic makeover

In Qatar, climate activists call on Islamic leaders to take a stand against global warming

Project aims to transform LA billboards into aerial gardens

Nope, they're not Photoshopped

Contrary to popular belief, the future looks bright for America's growing green economy

Austrian artist asks, "What would happen if..."