Paleontologists have unearthed the oldest fossil belonging to the hominin species Homo erectus. The 2 million-year-old fossil skull, excavated over a five-year period in South Africa, suggests the early human relative emerged between 100,000 and 200,000 years earlier than previously thought. Scientists described the discovery in a new paper published this week in the journal Science. "The Homo erectus skull we found, likely aged between 2 and 3 years old ...