This 2020 episode covers the sphere of plutonium-gallium alloy that the U.S. made for use in an atomic bomb during World War II known as the Demon Core was It was the source of two fatal criticality accidents.

Unearthed! In July 2026, Part 1
41:36

SYMHC Classics: Raincoats
39:10

Behind the Scenes Minis: Shoes, Shoes, Shoes!
30:14