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And hear. Reporter it may be an ancient instrument, with a heavenly sound. But in modern day atlanta, jarnl, the harp is about much much more. It is about opportunity. We dont expect everybody to become a professional harpist. Its about helping children to become all they can become. Reporter ahead on sunday morning atlantas urban youth harp ensemble. Osgood and that brings us to led zeppelin. One of the most successful and influential rock groups of all time. Anthony mason will be talking with the members. Reporter in the 1970s no band was bigger than led zeppelin. The surviving members who w...

Few objects in the world are more immediately recognizable than the barcode.

Few objects in the world are more immediately recognizable than the barcode—more than 6 billion are scanned every single day. Here’s what to know about their history.

Peering into the past. C.J. Burton/The Image Bank/Getty Images Few objects in the world are more immediately recognizable than the bar code. After all, bar codes are all around us. They’re on …

If history had taken another path, bar codes would look dramatically different today.