Humans Shaped Stone Axes 1.8 Million Years Ago

[Science Daily]  A new study suggests that Homo erectus, a precursor to modern humans, was using advanced toolmaking methods in East Africa 1.8 million years ago, at least 300,000 years earlier than previously thought. The study, recently published in Nature, raises new questions about where these tall and slender early humans originated and how they developed sophisticated tool-making technology.  More