The F414 engines might be retired, but their precious metals won't be.

The market for energy-sipping fridges and washers might grow fivefold in five years.

Hot rocks are summoning more power, more quickly than ever before.

Is the 2,000-gallon aquarium wet bar the most "green" feature? Or is it the golf-course grass driveway?

If it's any consolation, his ride won't exactly be a thrill.

Should a producing country be held to account for emissions? Or does the consuming country bear some responsibility?

Ultracheap solar and electricity from a glass of water: Researchers reveal their most exciting projects.

Prompted by complaints of high bills, state regulators plan to investigate PG&E's program.

Investigation finds rich countries are buying Africa's best land to sew up supplies of food and biofuel.

Award for "The Cove" brings new fuel to the save-the-dolphins campaign.