Solar and wind may be the sexy way to go green. But what about the dirt under your house?

A plentiful source of energy deep underground -- and it ain’t oil. Here’s your cheat sheet to geothermal energy.

Queen Elizabeth strikes me more as a radical tweedie than a radical greenie. But apparently she’s quite the pioneer.

Cold comfort it may be, but rest assured you're not the only one freaking out about sky-high heating bills this season. “How to Beat the Big Energy Chill,” in the current issue of Newsweek takes a fascinating look at the flipside of the heating-bill crisis: High oil prices amp up the economic argument for switching to alternative energy. Sure enough, as oil prices surpassed 60 dollars a barrel in recent months, investors have been seeing the logic in making the clean-power shift.