Climate Home: A deal to slash aviation emissions later this year risks being blown off course unless it overcomes major differences between wealthy and developing countries, according to NGOs. Regional meetings are taking place ahead of a September assembly of UN aviation authority, ICAO, tasked with delivering a goal to cap the industrys emissions at 2020 levels. Aviation was a significant omission from last years Paris climate deal. If left unchecked, the sectors share of global emissions could jump from...