Hasekura Rokuemon Tsunenaga was a samurai who led a diplomatic delegation to New Spain, Spain and Rome in the 17th century. But many of the Japanese records about their mission were lost or destroyed after they returned.
Research:

Dorothy Crowfoot Hodgkin’s Crystalline Chemistry, Part 1
38:04

SYMHC Classics: Sarah Bradlee Fulton
32:28

Behind the Scenes Minis: Stairs and Trains
29:25