Subscriber content preview. or Sign In
Aviation accounts for only about 2% of global greenhouse-gas emissions, but it's one of the fastest-growing contributors to climate change. That's one reason the Environmental Protection Agency announced on June 10 that it will develop regulations for carbon emissions from airplanes, which could prompt major industry changes.
Airline companies have begun experimenting with carbon-neutral biofuels. These fuels can cut carbon emissions, but they have yet to be mass-produced for use.
2 Traffic control
New precision-based navigation systems will allow airlines to fly more directly to their destination, using satellite signals. Shorter flights mean less fuel burned–and fewer emissions.