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Grading the Airlines’ Climate Agreement: Historic Steps, Missed Opportunities

In a historic climate agreement last Thursday, countries and airlines gathered at the triennial assembly of the International Civil Aviation Organization (ICAO) in Montreal committed to “carbon neutral growth” in international flights between more than 60 countries after 2021. This means that after airlines flying those international routes cut greenhouse gas emissions within their operations, they would need to offset any residual increase in their emissions by purchasing credits for emission reductions made in other sectors. The ICAO agreement is a mixed bag—it makes some historic steps and defers some important decisions to later, but is also a missed opportunity when it comes to carbon pricing.