Volatile temperatures don't bode well for worldwide deficit, report warns

World-renowned photographer unveils his most ambitious project to date

Colored Plexiglas forms used to explore themes of captivity

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

Recent work from Europe's famous snow walking artist

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

In an NYT op-ed, Robert Kennedy Jr. and David Crane make the case for expanded solar

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