References:
Others
- Washington Post (https://www.washingtonpost.com/lifestyle/magazine/he-saw-the-scientific-promise-in-the-paranormal-but-now-his-legacy-could-be-lost/2019/09/23/e42c02e6-c8e8-11e9-a4f3-c081a126de70_story.html)
- Science Alert (https://www.sciencealert.com/these-personal-effects-of-marie-curie-will-be-radioactive-for-another-1-500-years)