Scientists say a Homo sapiens fossil found in Ethiopia in the 1960s is at least 233,000 years old, which is 36,000 years older than previous estimates. The revised estimate, based on new analyzes of nearby volcanic ash, showed excellent agreement with most models of modern human evolution.
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Pictured is a pile of mammoth bones newly discovered in New Mexico. This mammoth bone is about 37,000 years old and shows signs of being butchered by humans, which shows that humans were in southwestern North America much earlier than previously thought.