We finally have an accurate measurement of a cheetah's top speed

For years, the top speed of the world's fastest land animal has been listed as 64 miles per hour – but that record is based on a single measurement, taken all the way back in the 1960s. So researchers flew to Botswana, where they outfitted wild cheetahs with motion- and acceleration-tracking collars. After measuring… » 6/12/13 11:22am 6/12/13 11:22am