clean energy

Investment in research, development and installation of clean energy technologies is critical to limit global warming.

By extending tax credits for renewable energy sources, the U.S. government intends to increase their supply and use.

Air quality in California cities improved through strong policies, technology and local collaborative action.

A recent study finds that pollutants have cut crop yields nearly in half in some areas. What can you do about it?

Buses can contribute to urban smog, but thanks to new hydrogen fuel-cell technology they also might be the perfect vehicles to reduce air pollution.

In remote communities in the U.S. Arctic where months pass without a sunrise, Alaskans are experiencing climate change and embracing green energy.

Over the past few decades, Los Angeles has learned techniques to improve air quality that could benefit other major cities around the world.

Big cities have big problems with pollution and are big laboratories for solutions. C40 Cities helps them collaborate on strategies.

After its first two years, the Power Africa campaign continues to boost electricity access, bringing light, computers and information into African homes.