S2 E3: 10 Modern Marvels That Changed America
A whirlwind tour of 10 engineering feats that made our civilization possible: from the Erie Canal and Eads Bridge, to the Holland Tunnel and Hoover Dam. Find out which 10 modern marvels made the list.
Aired: 7/24/2018 | 0:54:56 | Expires: 7/23/2028
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