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Networks & Studios
Networks
National GeographicProduction Companies
Show Information
StatusReturning Series
TypeDocumentary
First Aired9/15/2004
Last Aired8/25/2011
Seasons8
Episodes129
LanguageEnglish
CountryUnited StatesUnited Kingdom
Currently in production
Creators & Crew
8
Seasons
129
Episodes
60m
Per Episode
2004
First Aired
Keywords
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Seasons
8 seasons
