Chemist Sir Humphry Davy is known for his work with nitrous oxide, or laughing gas. That early part of his career is the focus of part one of this two-parter.
Research:

Unearthed! In July 2026, Part 1
41:36

SYMHC Classics: Raincoats
39:10

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