Nature's own running shoe

i'll be posting choice bits from the Nature paper along with commentary, but for now, the killer quote:

"People who don't wear shoes when they run have an astonishingly different strike," Lieberman said in a statement. "By landing on the middle or front of the foot, barefoot runners have almost no impact collision, much less than most shod runners generate when they heel-strike."

Barefoot Ted, doing his thing.