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Early humans in America endured climate chaos—new research
Some 23,000 years ago, during the coldest part of the last ice age, people walked across the muddy margins of an ancient lake in what is now White Sands National Park, New Mexico.
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Around 23,000 years ago, during the coldest phase of the last ice age, people traversed the muddy edges of an ancient lake that is now White Sands National Park in New Mexico, leaving footprints that have reshaped estimates of the earliest human arrival in the Americas. The 2021 analysis of those prints dated the presence of people in North America thousands of years earlier than most widely accepted archaeological sites. That dating sparked controversy within the scientific community.
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