1.5 million-year-old human footprints found - Technology & science ...
Updated May. 18, 2013
Anthropologists continue to debate whether these older footprints from an earlier "Lucy" type hominid show that Australopithecus walked about easily or awkwardly on ...http://www.nbcnews.com/id/29415977/ns/technology_and_science-science/t/million-y...







