Send a comment on this item to LII: Send a comment on this item to LII staff, who on weekdays will usually reply within 24 hours. The Exploratorium's Science of Cycling Part of a series from the Exploratorium (San Francisco) on "the science behind popular spectator and recreational sports." Features sections on bicycle wheels, drives and gears, frames and materials, braking and steering, aerodynamics, and human power. Includes images and video clips. Available in German, Dutch, and English. http://www.exploratorium.edu/cycling/ Asterisk * indicates required field. Your Name Your Email Address * We will not sell or provide your email address to anyone else. Comment * Enter the verification code as it is shown in the box below. This helps prevent automated submissions. *