Prepare to rethink everything you know about commercial lighting - this bright new era of innovation goes far beyond LEDs

Who else is making progress on renewable energy? Wal-Mart, Whole Foods, the city of Houston and more

This little-known nonprofit is working to rebuild the multi-year reflective "bright ice" in the Arctic, in order to slow the Arctic melt

Private sector partners and creative financing are accelerating the military's quest to slash energy intensity and increase the use of clean tech

Smart device maker Nest shows how energy efficiency can be sexy — and profitable

What does "landfill-free" really mean? A rigorous certification program will define the answer

Put 350 ranchers and beef producers in a conference room. Add environmental activists. Stir. Is it a recipe for success?

The fast-food giant is committing to purchase sustainable beef, but is it biting off more than it can chew?

By juicing geothermal with CO2, a team of scientists hope to overcome limitations to this potentially powerful form of renewable electricity

From reusable gift wrap to recyclable boxes, you can curb waste in the gift-giving season and beyond