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On Monday morning, August 21, a total solar eclipse will travel from coast to coast for the first time in a century. Columbia University’s renowned astrophysicist and author of The Elegant Universe Brian Greene explains why this extraordinary observance is not to be missed.

Often times, these eclipses don't happen over populated areas. You have to go in the middle of the ocean or someplace far away, but we have a real opportunity to experience one of the great wonders of nature.”

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