Thanks go to Clair Patterson.

Because he realized just how much lead contamination there was everywhere when it was impossible to get negative controls to measure the age of the Earth and Moon.

QT Jacqueline Antonovich @jackiantonovich.bsky.social
2026 August 9

My youngest, randomly, "Wait, does unleaded gas mean that there used to be...leaded gas?"

Me: "Yup! When I first started driving, they still had leaded gas."

Youngest, "How was that even a thing? Are you ok??"
https://bsky.app/profile/jackiantonovich.bsky.social/post/3msnvyoodj22l