End Of Leaded Gasoline: World Has Stopped Using Toxic Additive : NPR
https://www.npr.org/2021/08/30/1031429212/the-world-has-finally-stopped-using-leaded-gasoline-algeria-used-the-last-stockpEvery country has now banned the use of leaded gasoline in cars - Our World in Data
https://ourworldindata.org/data-insights/every-country-has-now-banned-the-use-of-leaded-gasoline-in-carsLeaded Fuel May Have Triggered a Mental Health Crisis Among Generation X : ScienceAlert
https://www.sciencealert.com/leaded-fuel-may-have-triggered-a-mental-health-crisis-among-generation-x