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.

As a clean, relatively cheap and reliable alternative to burning fossil fuels, wind power plays an important role in China’s energy mix.

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.

So far, the 21st century has been an interesting time to work for a city.

Business leaders convened last week in London to launch the first global Natural Capital Protocol, a standardized framework which aims to help managers around the world better value nature in their decision-making.

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.

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.

"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.

In many developing and emerging markets, private sector actors and business models are achieving significant measurable and sustainable impact.

Randy Miller farms about 1,000 acres of corn, soybeans and hay in Iowa’s corn belt, where this time of year shoulder-high plants stretch for hundreds of miles.