24 hours of plane travel

The number of airplanes of all kinds that are in the air at any given moment of the day is staggering. From city to city hops right up to trans world flights the movement of people never stops. The following simulation of air traffic in one single 24 hour period was put together by Zhaw School of Engineering in order to give us a sampling of what is happening in the skies above us.

hat tip to Treehugger