flights departing airports in the united states and its territories emitted about one-quarter (24%) of global passenger transport-related co2, two-thirds of which came from domestic flights.
flights departing airports in the united states and its territories emitted about one-quarter (24%) of global passenger transport-related co2, two-thirds of which came from domestic flights.
environmental impact of aviation:17
in 1999 the contribution of civil aircraft-in-flight to global co2 emissions was estimated to be around two percent.