The Walk Score team released new bikeability rankings, and they contain a few surprises

In prestigious Vendee Globe sailing race, Javier Sanso's boat relies on the power of wind, water and sun

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

Striking images of our home planet as seen from orbit in 2012

The Nature Conservancy forges surprising partnerships to further its mission

Upstart app looks to track your carbon footprint

Surreal, super-saturated landscapes captured by the French photographer

World Energy Council calls for stable policies to encourage sustainability

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

Leaders face big challenges at the 2012 climate conference