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Cool Science Radio | October 31, 2024
Paleoanthropologist Donald Johanson, who found the 3.2 million-year-old iconic fossil "Lucy," discusses finding the fossil 50 years ago in the Ethiopian desert. Then, Scientific American journalist Mark Fischetti explains why the earth’s rotation is changing and how that relates to how global timekeepers accurately keep time.
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By Lynn Ware Peek, Scott Greenberg
4.9
88 ratings
Paleoanthropologist Donald Johanson, who found the 3.2 million-year-old iconic fossil "Lucy," discusses finding the fossil 50 years ago in the Ethiopian desert. Then, Scientific American journalist Mark Fischetti explains why the earth’s rotation is changing and how that relates to how global timekeepers accurately keep time.
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