Cosmos: 1x7
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 - 1Standing Up in the Milky Way Mar. 09, 2014
- 1 - 2Some of the Things That Molecules Do Mar. 16, 2014
- 1 - 3When Knowledge Conquered Fear Mar. 23, 2014
- 1 - 4A Sky Full of Ghosts Mar. 30, 2014
- 1 - 5Hiding in the Light Apr. 06, 2014
- 1 - 6Deeper, Deeper, Deeper Still Apr. 13, 2014
- 1 - 7The Clean Room Apr. 20, 2014
- 1 - 8Sisters of the Sun Apr. 27, 2014
- 1 - 9The Lost Worlds of Planet Earth May. 04, 2014
- 1 - 10The Electric Boy May. 11, 2014
- 1 - 11The Immortals May. 18, 2014
- 1 - 12The World Set Free Jun. 01, 2014
- 1 - 13Unafraid of the Dark Jun. 08, 2014