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Season 1
![Cosmos Season 1 Episode 7](http://images.weserv.nl/?url=//image.tmdb.org/t/p/w185/l4pdg33PJg6YeFkm6os9mfMDfLC.jpg)
Cosmos Season 1 Episode 7
To determine the true age of the Earth, geochemist Clair Patterson developed the uranium-lead dating method to make an unprecedented discovery
Quality: HD
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To determine the true age of the Earth, geochemist Clair Patterson developed the uranium-lead dating method to make an unprecedented discovery
Quality: HD