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Patterson
The Most Important Scientist You’ve Never Heard Of – Mental Floss: https://www.mentalfloss.com/article/94569/clair-patterson-scientist-who-determined-age-earth-and-then-saved-it
The Most Important Scientist You’ve Never Heard Of – Mental Floss: https://www.mentalfloss.com/article/94569/clair-patterson-scientist-who-determined-age-earth-and-then-saved-it