科学
Ancient spearheads reveal how Ice Age humans learned the land
来源: Phys.org · 发布于
At the end of the last ice age, early humans crisscrossed the Americas following seasons, rivers and game, often with a trusty spear in hand. Nearly 13,000 years later, archaeologists are using those…
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- #ice
- #age
- #archaeologists
- #crisscrossed
- #spearheads
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