Researchers follow the bison for clues to mystery of ancient America's settlement

Study asserts North America was likely colonized via the Pacific coast, not the Rocky Moutains as previously thought - but when and how remains unknown

The bones of giant steppe bison and clues left by their ice age hunters have led scientists to conclude that people likely colonized North America south from Alaska along the Pacific coast, and not through the Rocky Mountains, according to a new study.

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