tajtrisha

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[tajtrisha]

I am From Bangladesh

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[tajtrisha]

🚀 Ready to supercharge your earning potential? Dive into "Unlocking Opportunities: A Guide to Earning with AI"! 🤖

🌐 Explore the AI landscape, thrive in the gig economy, build AI-powered businesses, make strategic investments, and develop in-demand skills. 🚀

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[tajtrisha]

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"Frozen Trails: Discovering the First North American Settlers Along the Glacial Sea Ice Highway"

New research suggests some early Americans may have traveled on winter sea ice down the coast from Beringia as long as 24,000 years ago.

One of the hottest debates in archeology is how and when humans first arrived in North America. Archaeologists have traditionally argued that people walked through an ice-free corridor that briefly opened between ice sheets an estimated 13,000 years ago.

New Evidence Challenges Traditional Theories

But a growing number of archeological and genetic finds — including human footprints in New Mexico dated to around 23,000 years old — suggests that people made their way onto the continent much earlier. These early Americans likely traveled along the Pacific coastline from Beringia, the land bridge between Asia and North America that emerged during the last glacial maximum when ice sheets bound up large amounts of water, causing sea levels to fall.

Now, in research that was presented Friday, December 15, at the American Geophysical Union Annual Meeting (AGU23) in San Franciso, paleoclimate reconstructions of the Pacific Northwest hint that sea ice may have been one way for people to move farther south.

Coastal Migration Theories

The idea that early Americans may have traveled along the Pacific Coast isn’t new. People were likely south of the massive ice sheets that once covered much of the continent by at least 16,000 years ago. Given that the ice-free corridor wouldn’t be open for thousands of years before these early arrivals, scientists instead proposed that people may have moved along a “kelp highway,” where early Americans slowly traveled down into North America in boats, following the bountiful goods found in coastal waters.

Archeologists have found evidence of coastal settlements in western Canada dating from as early as 14,000 years ago. But in 2020, researchers noted that freshwater from melting glaciers at the time may have created a strong current that would make it difficult for people to travel along the coast.

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