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"Last week, Sami took a close look at the airline industry and wrote about how they are aiming for zero emissions. In May, Warren covered Nature Air, a little fleet of seven planes that were working on alternative aviation fuels. We of course think this"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.treehugger.com/cars/does-the-airline-industry-recycle.html>