From poison to power: How lead exposure helped shape human intelligence

ScienceDaily
Oct 16, 2025, 10:31 am130 pts
Long before humans built cities or wrote words, our ancestors may have faced a hidden threat that shaped who we became. Scientists studying ancient teeth found that early humans, great apes, and even Neanderthals were exposed to lead millions of years ago. This toxic metal can damage the brain, yet modern…

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