Fossilized footprints in the salt flats of White Sands National Monument, in the southwestern U.S. state of New Mexico, reveal humans walking in the exact footsteps of a giant sloth and then confronting it, possibly hurling spears.
Today we were looking for a desert lake in Africa where scientists recently discovered a set of footprints that’s one-point-five million years old. The answer is Lake Turkana in northern Kenya. Anchor Lisa Mullins gets details from anthropologist John Harris, a member of the team that uncovered the prints.