By linking together networks of energy-efficient buildings, solar installations, and batteries ...

Stretching south from Panama through Colombia and into Ecuador, the Chocó Rainforest is one of the world’s most biologically rich ecosystems.

"If you want to win the climate change battle, it will be fought in the cities of the world," WRI President and CEO Andrew Steer told participants at a forum on the role of urban areas in the global shift to clean energy.

Temperatures recorded mainly in the northern hemisphere in the first six months of the year, coupled with an early and fast Arctic sea ice melt and "new highs" in heat-trapping carbon dioxide levels, point to quickening climate change

Drive through agriculture-rich Central California today, and you'll see a few things: roadside fruit stands, buses hauling porta-potties up to sprawling farms and large groups of workers bent over inspecting produce in the fields.

Forests straddling the equator are critical to a stable climate because they store vast amounts of carbon, and a new study finds that the U.S. and four other developed countries are spending billions of dollars to keep those forests intact.

Officials are moving ahead with a major revitalization of the Los Angeles River – removing miles of concrete along its banks and re-greening areas now covered with pavement.

The world is in the midst of a solar power revolution. In under two decades, the solar PV industry has evolved from being niche to one poised to take on the utility incumbents as an affordable mainstream energy source.

Researchers are finding that kelp, eelgrass, and other vegetation can effectively absorb CO2 and reduce acidity in the ocean.

During that first flight in Kitty Hawk, we can be quite sure that Orville and Wilbur Wright were not thinking about how much carbon dioxide their contraption was spewing.