http://www.john-drury.com/blog/?p=8 5 AWESOMELY GREAT APPLICATIONS FOR MAC USERS ONLY ROFLCOPTER
http://www.mic-ro.com/metro/metroart.html This page is about subway stations and the art inside of them around the world.
http://www.exploratorium.edu/snacks/tired_weight/index.html Calculate a car's weight by measuring its area touching the ground and tire pressure.
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