Environment

Washington, D.C., Los Angeles, California, and Atlanta, Georgia, are three very different U.S. cities, but they are all top Energy Star cities.

New approaches to harvesting energy are taking shape. Three ingenious projects give you a taste of what the energy future might look like. The sky...

Running a 10-kilometer race will burn calories and improve your health. Beyond those benefits, an annual footrace contributes to reforestation and erosion prevention in...

Bill Gates and 20 of the world's top entrepreneurs have a plan for investing in great ideas. They aim to revolutionize the clean energy sector.

With the largest fleet of natural gas buses in the U.S. — about 2,200 — Los Angeles has become a leader in cutting carbon emissions.

The challenge facing farmers and the food industry is to feed the 9 billion people expected in 2050 while preserving the environment and climate.

It is not too late to curb the greenhouse emissions that are causing climate change, says Secretary Kerry, and an effective agreement is within reach.

What's stopping you from using solar energy? Get the facts straight and make myths about solar energy a thing of the past.

DNA "fingerprinting" has allowed timber companies to use the latest genetic technology to ensure that lumber has been legally harvested.