Thanks to Google’s doodle, I am reminded that today would have been the 93rd birthday of the scientist Rosalind Franklin. Not a household name, but that is because her most important work has the name of two other people attached: Watson and Crick.
Franklin was the first to make photographs of the structure of DNA, which showed that the molecule was a double helix. Unfortunately her photographs were learned by others via backdoor sources, and she did not receive the deserved credit. She died in 1958 from cancer, likely due to the experiments that were part of her photographing of molecules, a process that had unsafe levels of radiation.
Hank Green did an informative video on the subject a couple of weeks ago, well worth watching.