Our Brains Evolved Thanks to… Lead? New Study Surprises Scientists

Scientists found that ancient lead exposure shaped early human evolution. The toxin may have played a surprising role in the development of modern cognition and language. An international team of scientists has challenged the long-held belief that exposure to lead is primarily a modern, post-industrial issue. Their findings show that human ancestors encountered this toxic [...]

from SciTechDaily https://ift.tt/4cCtTp3