European Union
Clean Sky (Council Regulation (EC) No. 71/2007 setting up the Clean Sky Joint Undertaking and No 558/2014 of 6 May 2014 establishing the Clean Sky 2 Joint Undertaking)
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Increasing aircraft fuel efficiency, thus reducing CO2 emissions by 20 to 30% compared to state-of-the-art aircraft entering into service as from 2014 by 2020
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Reduce CO2 emissions by 50% and NOx by 80% by 2020 against a 2007 baseline