In what could be the most consequential meeting on climate change in 2016, the world’s airlines are gathering next week in Montreal for the 39th triennial assembly of the International Civil Aviation Organization (ICAO). There they will consider a proposal to cap carbon dioxide emissions from international flights and let participating airlines trade the rights to emit. An ICAO-sanctioned cap-and-trade program could lead to airlines achieving their goal in part by buying credits for the protection of tropical forests.
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