Cosmos Season 1 Episode 7
The Clean Room
To determine the true age of the Earth, geochemist Clair Patterson developed the uranium-lead dating method to make an unprecedented discovery – calculating Earth's age of 4.5 billion years. But Patterson's groundbreaking discoveries were just beginning. Patterson made it his mission to draw public attention to the detrimental effects of lead in the environment and dedicated his career to fighting against the petroleum and chemical industry, eventually achieving public health's biggest victory of the 20th century.
1 - 13Unafraid of the DarkJun. 08, 2014- 1 - 12The World Set FreeJun. 01, 2014
- 1 - 11The ImmortalsMay. 18, 2014
- 1 - 10The Electric BoyMay. 11, 2014
- 1 - 9The Lost Worlds of Planet EarthMay. 04, 2014
- 1 - 8Sisters of the SunApr. 27, 2014
- 1 - 7The Clean RoomApr. 20, 2014
- 1 - 6Deeper, Deeper, Deeper StillApr. 13, 2014
- 1 - 5Hiding in the LightApr. 06, 2014
- 1 - 4A Sky Full of GhostsMar. 30, 2014
- 1 - 3When Knowledge Conquered FearMar. 23, 2014
- 1 - 2Some of the Things That Molecules DoMar. 16, 2014
- 1 - 1Standing Up in the Milky WayMar. 09, 2014
