Why bicycles don't fall over

This fascinating TED talk demonstrates the reasons bicycles stay balanced and don't fall over.

Arend Schwab from Delft University of Technology, Department of Mechanical Engineering did his BSc Engineering at Dordrecht (1979) and MSc Engineering (1983) and PhD (2002) at Delft. He runs the bicycle mechanics lab and teaches mechanics. Whenever Arend comes up with an assignment for his students, the hallway of the faculty is crammed with all sorts of very strange objects that resemble bikes only slighlty. Considering bicyles constitute 40% of the Netherlands traffic making it the bicycle capital of the world, his work is very interesting not only for the dutch people but anyone who ever rode a bicycle.