http://rss.nytimes.com/c/34625/f/640350/s/4cc992b2/sc/31/l/0L0Snytimes0N0C20A160C0A10C120Cscience0Crethinking0Ethe0Eairplane0Efor0Eclimates0Esake0Bhtml0Dpartner0Frss0Gemc0Frss/story01.htm

Although aviation was left out of the climate treaty adopted in December, reducing emissions remains a priority at the core of several research efforts.

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