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Apr 22, 2014 01:00 PM ET // Paul Gabrielsen
Tidal power can do what wind and solar can’t: provide reliable energy, right when you need it.
Jan 7, 2011 02:12 PM ET // Tim Wall
A diversity of grasses is better than a monoculture of corn for wildlife, making biofuel friendlier than ethanol for the environment.
Oct 21, 2010 04:26 PM ET // Tim Wall
A simple, new hydropower dam offers energy without destructive side effects.
Jan 11, 2012 01:03 PM ET // Alyssa Danigelis
Earthships seem like they were built by environmental aliens who crash landed in the desert; now they make fun lodging during eco-minded vacations.
Dec 20, 2010 11:17 AM ET // Tim Wall
The turbines do this by keeping crops dry and reducing temperature extremes.