S01e07 Bdrip 1080p.mkv | Cosmos (2014)

Radiometric dating, geology, lab sterilization techniques, and the ethics of scientific research vs. corporate interests. Video Specs for your file:

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It details Patterson's discovery that environmental lead was contaminating his samples, leading him to create the first ultra-pure "clean room". This discovery evolved into a decades-long battle against the petroleum industry to ban leaded gasoline , exposing it as a public health neurotoxin. lab sterilization techniques