Mystery surrounds ancient but advanced tools found in India

More than 7,000 ancient stone tools have been discovered in India that show a distinct upgrade in stone-shaping techniques — including advanced blades, points and scrapers — dating as far back as 385,000 years ago.  This suggests that modern stone tools were being made in India 250,000 years earlier than previously thought. The tools may have been made by an archaic species of hominin, rather than modern humans.