The smallest bicycle that an adult can ride has wheels made from silver dollars. Steve McPeak built and rode a unicycle that was ten stories tall. The greatest skill was not in riding the machine, but in building it so that the chains would not fall off the sprockets. At St. Helen's School in Newbury, Ohio, unicycling is a mandatory subject. The students are allowed to ride their unicycles in the halls between classes.
Collisions are surprisingly few.
Half of all the parts of a typical bicycle are in the chain. The most efficient animal on earth in terms of weight transported over distance for energy expended is a human on a bicycle. Ford started his automobile company through the backing of world-champion Tom Cooper. At the end of the Spanish-American War, in 1898, the United States occupied Cuba. Rioting mobs in the street, along with outbreaks of malaria and yellow fever, created havoc in the country.