Word: geochronologist
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Dates: during 1990-1999
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...species went extinct elsewhere in the world, but also must revisit two of science's most hotly debated questions: Where on the habitable continents did modern humans first emerge, and how did they come to dominate the world? "These dates will stir up a lot of controversy," says geochronologist Carl Swisher of the Berkeley Geochronology Center in Berkeley, California, who headed the study. "Some people definitely won't believe them...
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