06 Aug '11, 12am

Google & NASA Start “Green Flight Challenge” (+ 16 Other Cleantech Stories of the Week): Filed under: Energy News

Google & NASA Start “Green Flight Challenge” (+ 16 Other Cleantech Stories of the Week): Filed under: Energy News

“Contestants must demonstrate that their aircraft can fly 200 passengers over a distance of 200 miles, in less than two hours, using the energy equivalent of just one gallon of gas or less per occupant,” Tara Kelly of the Huffington Post reports . “Aircraft may be propelled by a variety of clean technology, including batteries, electric motors, bio-fuel solutions or hybrid engines.”

Full article: http://cleantechnica.com/2011/08/05/google-nasa-start-gre...

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Enjoy this incredible Nature Photo of the Week!

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10 More Cleantech Stories of the Week

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In honor of shark week, check out these 8 crazy cool shark tales (w/ video) from @treehugger:

In honor of shark week, check out these 8 crazy...

treehugger.com 04 Aug '11, 1pm

1. Epic Shark Feeding Frenzy Caught on Film In September of last year, a feeding frenzy off the coast of Queensland, Austr...