Niède Guidon, a Brazilian archaeologist, significantly challenged the Clovis-first theory that posited humans migrated to the Americas 11,500 years ago. Her research in northeastern Brazil revealed evidence of human presence over 30,000 years ago, sparking controversy in the scientific community. Guidon faced political persecution during Brazil's military dictatorship but continued her research after returning to France. Her expeditions in the Piauí region uncovered 55 archaeological sites, leading to re-evaluations of early human migration in the Americas. Guidon passed away at the age of 92.
In 2003, I began expressing the idea that the sites were older... We had begun to suppose the presence of man much earlier than we imagined.
The Clovis-first theory, widely accepted, stated that humans arrived in the Americas around 11,500 years ago, crossing the Bering Strait.
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