Airplanes may be a convenient way to travel, but they could be inadvertently causing a change in the atmosphere.

Airplanes may be a convenient way to travel, but they could be inadvertently causing a change in the atmosphere. 
At a recent meeting of the American Geophysical Union, researchers with the National Oceanic and Atmospheric Administration presented evidence that the residual haze may be whitening the skies.
“Accidental geoengineering” is what one of the scientists has called the phenomenon because, to him, it falls within the definition which involves the “large-scale manipulation of pa