Subsistence hunters in the Arctic have long taken to the sea ice to hunt seals, whales, and polar bears.

If the world is to have another Green Revolution to feed its soaring population, it must be far more sustainable than the first one.

Researchers are only beginning to understand the complexities of the microbes in the earth’s soil and the role they play in fostering healthy ecosystems.

Until recently, little was known about the extent of methane leaking from urban gas distribution pipes and its impact on global warming.

One of President Obama’s signature achievements on climate has been strict standards aimed at improving auto fuel efficiency to nearly 55 miles per gallon by 2025.

With new marine protected areas and an emerging U.N. treaty, global ocean conservation efforts are on the verge of a major advance.

Surprising new statistics show that the world economy is expanding while global carbon emissions remain at the same level.

The fate of a tree planted at poet Emily Dickinson's home raises questions about whether gardeners can — or should — play a role in helping plant species migrate ...

In the face of rising temperatures and worsening drought, the world’s repositories of agricultural seeds may hold the key to growing food under increasingly harsh conditions.

The ʻohiʻa is Hawaii’s iconic tree, a keystone species that maintains healthy watersheds and provides habitat for numerous endangered birds.