http://feeds.newscientist.com/c/749/f/638484/s/32296bfb/sc/10/l/0L0Snewscientist0N0Carticle0Cdn24360A0Einternational0Eairlines0Eface0Eemissions0Ecaps0Efrom0E20A20A0Bhtml0Dcmpid0FRSS0QNSNS0Q20A120EGLOBAL0Qnews/story01.htm

A UN decision means that international airlines will have to curb their greenhouse gas emissions from 2020 – but it’s not clear by how much

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