1 Season
S1 E2 1/9/10

Chicago

The city that invented the skyscraper has a long history of playing host to towering beasts. From the mammoths and mastodons that lived there 13,000 years ago to the bizarre sea creatures who called downtown home 420 millions years ago, we're digging deep into prehistoric Chicago.

Seasons

Episode   1

New York

Episode   2

Chicago

Episode   4

Denver

Episode   5

Dallas

Episode   6

Los Angeles