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1500 years ago, how did the Romans engineer bloody spectacles and reenact sea battles?
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How has this unique structure, built on a seismic fault, survived centuries of quakes?

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In Tampa, Florida, in February 2013, a giant hole in the ground opened up and swallowed...
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NOVA  ·  Episode 4205

Petra: Lost City of Stone

02/18/2015

How did early engineers carve tombs into rock cliffs and funnel water to this desert city?

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