Decreasing taxiing of airplanes helps to save fuel and reduce emissions

The best way to decrease greenhouse gases on the runway indeed, researchers recently discovered that by simply holding planes at their gates at the Boston Logan International Airport, taxiing time dropped by 20 per cent and fuel use decreased by 75 liters per plane! The study funded by the US Federal Aviation Administration has been published as an MIT Technical Report. Domestic flights in the United States alone emit about 6 million tons of CO2 from taxiing per year. In Europe too, planes spend an estimated 10 to 30 per cent of their journey time taxiing on runways emitting astounding amounts of in the CO2 bargain. Also, airports these days have been optimizing flight paths for planes on arrivals.

The two techniques put together could help save a load of fuel and keep tons of pollutants out of the atmosphere!
[NewScientist]