Naked Science - Close Encounters
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Has planet earth ever had a close encounter with aliens?
FIRST PEOPLES | Kennewick Man | PBS
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First Peoples Americas PBS NOVA
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Tracking The First Americans Ancient Voices
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A study of skulls excavated from the tip of Baja California in Mexico suggests that the first Americans may not have been the ancestors of today's Amerindians, but another people who came from Southeast Asia and the southern Pacific area.