NPR's Robert Krulwich examines how Magnetic Fields work. (LINK)
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Since the Earth is gauged to be 4.57 billion years old, then the percentage of time humans have been actively involved is less then .000262%
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The Human Era...
Since the Earth is gauged to be 4.57 billion years old, then the percentage of time humans have been actively involved is less then .000262%
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