52 ฤดูกาล
994 ตอน
NOVA - Season 21 Episode 7
Anthropologist Donald Johanson looks at how our human ancestors of two million years ago made their living. Contrary to popular myth, scavenging was a more lucrative living than hunting-and may have contributed to the development of human intelligence.
- ประเทศ : United States of America
- ประเภท : Documentary
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