America 250 time capsule to be buried in Philadelphia on July 4th. Here's what's in it

America 250 time capsule to be buried in Philadelphia on July 4th. Here's what's in it
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For more than a decade, teams with the Library of Congress and the National Institute of Standards and Technology have been planning and preparing to bury a time capsule outside Independence Hall in Philadelphia as part of the nation's 250th birthday celebration.The America 250 time capsule is a ...