Radiometric dating, geology, lab sterilization techniques, and the ethics of scientific research vs. corporate interests. Video Specs for your file:
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The episode focuses on geochemist Clair Patterson (voiced by Richard Gere in animated segments), who pioneered uranium-lead dating using zircon crystals. The scientific quest to determine the true age of the Earth
The scientific quest to determine the true age of the Earth .
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.