Dr. Dan KillamFeb 3
Comparing historical hair samples from people from when they were babies to today, a new study finds a nearly 100-fold decrease in lead from samples after the EPA's crackdown on leaded gas. Regulation works and it saves lives!
https://arstechnica.com/science/2026/02/a-century-of-hair-samples-proves-leaded-gas-ban-worked/
Show threadKevin Russell

@dantheclamman

That's a 20% increase in population IQ

Feb 4 at 11:13pmWeb
Show threadMichael GemarFeb 4

@kevinrns @dantheclamman Perhaps one factor in the Flynn Effect?

https://en.wikipedia.org/wiki/Flynn_effect

Flynn effect - Wikipedia

Show threadKevin RussellFeb 5

@michaelgemar @dantheclamman

Lead poisoning causes almost 10% of intellectual disability of otherwise unknown cause and can result in behavioral problems.[2]