Formula can calculate a person's speed by just looking at their footprints

Scientists have designed an equation that provides a highly accurate estimate of an individual's speed based on stride length. They used data from professional athletes and walking and running experiments on a beach in order to come up with the equation. The result has applications in the study of fossil trackways of human footprints.

Fuente : http://feeds.sciencedaily.com/~r/sciencedaily/~3/E...