Image copyright HUMAN ORIGINS PROGRAM, SMITHSONIANHumans may have developed advanced social behaviours and trade 100,000 years earlier than previously thought.
This is according to a series of papers published today in Science. The results come from an archaeological site in Kenya’s rift valley. “Over one million years of time” is represented at the site, according to Rick Potts from the Smithsonian Institution, who was involved in the studies.















