Stone tools date early humans in North Africa to 2. New archaeological evidence published today online by the journal Science as a First Release indicates their presence in North Africa at least 2. This is about 600,000 years earlier than previously thought. [PUNIQGOOGLESNIPMIX-1
Plants and Animals Excavating stone artifacts that date from 3. Sammy Lokorodi, who made the initial discovery. Something felt special about this particular place, so before moving on, we all fanned out and surveyed the patch of craggy outcrops.
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Based at the University of Wales Trinity St David, he has devoted his career to studying the Quaternary period — the last 2. Though originally a field reserved for archaeologists, physical scientists like Walker are showing that they also have crucial contributions to make. With the help of new physical and chemical dating methods, scientists are finally beginning to discover how and when archaic species became… well, us. Developed by Willard Libby in the 1940s — and winning him the Nobel prize in chemistry in 1960 — the basic principle of radiocarbon dating is simple. living things exchange carbon with their environment until they die.
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