Reuters: Senior officials from business and commercial aviation voiced cautious optimism that a long-sought worldwide framework to reduce aviation's carbon emissions could be in place by 2020.
And a key negotiator for the European Union's Executive Commission, focus of anger from many other countries over its emissions trading scheme (ETS), said she hoped a road map towards a pact would be agreed by this autumn.
The comments came on Tuesday at a discussion on prospects for a global deal eliminating...