Scientists take on the project of rebuilding the great American plains. Conservationists must reintroduce populations of iconic American species, some on the brink of extinction.
| Tagline | |
| Release Date: | Apr 21, 2010 |
| Genres: | Documentary |
| Production Company: | National Geographic |
| Production Countries: | United States of America |
| Casts: | Tom Selleck |
| Status: | Released |
| Budget: | $0 |
| Revenue: | 0 |
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