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Alternative Power Sources

This Just In
Apr 21, 2015 02:00 PM ET // Glenn McDonald
City Sand Tower would power 192 acres with solar and geothermal energy.
Apr 21, 2015 11:42 AM ET // Renee Morad
A biogas reactor that transforms human waste into energy could supply free methane to local villagers.
Apr 19, 2015 09:05 AM ET // Tracy Staedter
Here are 10 innovations working hard to make Earth a cleaner, healthier, more sustainable place to live.
Apr 16, 2015 02:20 PM ET // Larry O'Hanlon
Moisture farming sounds promising but may not be the best tech for California.
Apr 13, 2015 11:56 AM ET // Tracy Staedter
An electric bicycle you don't have to plug in.
Apr 12, 2015 07:00 AM ET // Tracy Staedter
As solar power gets more affordable, we're finding it all the right places.
Mar 20, 2015 12:32 PM ET // Glenn McDonald
Low-cost design could help farmers in Ethiopia maintain self-sufficient agriculture.
Mar 17, 2015 01:05 PM ET // Renee Morad
Growing plants indoors in psychedelic hydroponic conditions consumes less energy, space and water than growing them in fields outside.
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