On this day in 1955, Rosa Parks refused to give up her seat to a white man on a city bus in Montgomery, Alabama, marking a key moment in the civil rights movement. What else happened?
The Cynics, members of a school of Greek philosophers dating from the 4th century BC, believed that civilization was an artificial, unnatural state that should be held in contempt. Keep learning on MSN Encarta.
This Week: Itchy, Scratchy What makes us itch? Bill Nye the Science Guy speculates on this head-scratching mystery. Take the body quiz If our skin is our largest organ, no wonder we're so itchy. Is Bigfoot ticklish? Since he's so shy, nobody's sure -- yet.