I highly recommend the following TED talk on bike physics by Arend Schwab from Delft University of Technology: http://www.youtube.com/watch?v=2Y4mbT3ozcA http:

I highly recommend the following TED talk on bike physics by Arend Schwab from Delft University of Technology: http://www.youtube.com/watch?v=2Y4mbT3ozcA http://www.youtube.com/watch?v=2Y4mbT3ozcA It focuses on the question why bikes do not fall, even without a rider on them (spoiler: coriolis is insignificant).