How old is planet Earth? -

How old is planet Earth?


Today’s Video of the Day comes from the American Chemical Society’s Reactions series and features a look at how scientists determined the correct age of planet Earth.

It turns out that Earth is roughly 4.565 billion years old (give or take a few million years). But the more interesting story is how scientists figured out the answer, after thousands of years of attempts.

By Rory Arnold, Staff Writer

Video Credit: American Chemical Society

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