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Age of Earth
Presents some of the ways scientists have tried to determine Earth's age over time, and how we now know that Earth is about 4.6 billion years old.
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Evidence About Earth's Past
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4.6 Billion Years in the Making: Our Wonderful World
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4.6 billion years in the history of the planet. That's an amazingly long time. This video will help you put that into perspective.
SCI.ESC.514 (Age of Earth - Earth Science)
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