Artist and Tree Activist Gillian Ware on preserving and respecting the arboreal world

In California, the answer is yes, says new study

The top shifts in cooking and eating over the past year

'Data furnaces' tap heat-generating computer servers to warm houses

Conflict over resources could cause global instability, says U.N. official

Visionary eco architecture from a sustainable design pioneer

Amazing travel photos of Scottish archipelago

Sustainability informs Brazilian designer's creations.

Military steps up effort to go green.