Think solar and wind are the only alternative fuels? Here are four surprising waste products that could one day make your car go vroom
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.
You don’t need a hybrid to get better gas mileage. These tips will save you at the pump — and on your carbon scorecard
Tankless water heaters are getting a lot of buzz. Are they the slam dunk they’re being made out to be?