Our Terms of Service and Privacy Policy have changed.

By continuing to use this site, you are agreeing to the new Privacy Policy and Terms of Service.

Runner-up: Cool Green Companies contest
Runner-up: Cool Green Companies contest
Project Frog, a green prefab building company based in San Francisco, was one of the runners-up. It makes affordable, highly energy-efficient buildings for schools, health care centers, and retail outlets.

Last updated May 25 2011: 6:01 AM ET

In this excerpt from Force of Nature, Edward Humes describes how Wal-Mart changed the way environmentalists looked at the company. More

Euros, private investments, telecoms as utility companies, and of course, Fukushima. 2011 has brought sweeping change to the world of green, and it's not even mid-year. A few trends that caught our eye. More