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  1. A Scientist Says He Has Evidence That Ice-Age Humans Lived in Maryland ...

  2. Ancient Chesapeake site challenges timeline of humans in the …

  3. Prehistoric Footprints Push Back Timeline of Humans' Arrival in …

  4. Ancient Chesapeake Site Challenges Timeline of Humans in the …

  5. North America's first people may have arrived by sea ice highway …

  6. North America's Oldest Known Footprints Point to Earlier Human

  7. How Early Humans Survived the Ice Age | HISTORY

  8. Ancient Footprints Suggest Humans Arrived In Americas During Ice Age

  9. How sea ice, ocean currents, and climate change may have

  10. UC Berkeley researchers provide proof of humans in North …

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