This is an amazing video. It's a 24-hour time-lapse video of worldwide air travel. Very cool! According to the site:

This animation shows all scheduled flights over a 24h period (based on 2008 data). Every day 93,000 flights are starting from approx. 9,000 airports. At all times there are between 8,000 and 13,000 airplanes in the air. This animation was produced by the Institute of Applied Information Technology (InIT), Zurich University of Applied Sciences.

Notice how the traffic diffuses when nightfall hits.



One thing I hate about all the airplane traffic is the nasty pollution and chemtrails that clutter the skies. There's always been speculation about the chemtrails-- HAARP Project, weather control, to help prevent "global warming," and that the fuel tanks emit chemical vapors because of an additive to the fuel to prevent bacteria growth in the tanks. Mmmhmmmm. I don't know what to believe, but I hate the skies looking like they need acne scar removal. I once saw some study of air traffic in the U.S., after 9/11: the skies over the country were CLEAN and CLEAR for the first time in decades. I hate looking up to the skies and seeing a zillion chemstreaks all over the atmosphere like a checkerboard. :-p