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Riding unicycles used to be a shameful pastime for circus animals and secretaries of defense, but this one-wheel lifestyle is seeping into the mainstream. (05:03)
After Stephen learns how dangerous texting while driving is, he starts his new Driving Tips via Twitter service. (02:22)
Lance Armstrong comes in third in the Tour de France, and Kevin Baker says Obama is the new Hoover. (00:31)
A person who isn't Lance Armstrong wins the Tour de France, and Japanese robots make baseball interesting. (03:19)