1360: "Invisible Ink"
- Author
- JC
- Published
- Wed 30 Jul 2025
- Episode Link
- https://jimconnors.net/interesting-things-with-jc/2025/7/30/1360-invisible-ink
Interesting Things with JC #1360: "Invisible Ink" – It wasn’t magic. It was chemistry. Messages hidden in sweat, milk, even matchbooks...when speaking could mean death, science spoke instead.
