The InternationalAirTransportAssociation ( IATA) last year set itself a long-term, yet ambitious, goal to build a zero emissions aircraft in the next 50 years.
According to the InternationalAirTransportAssociation(IATA) jet engines today are 40 percent more fuel-efficient than those designed in the 1960s, with pollutants such as soot and sulphur now almost completely eliminated from jet exhaust.