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 – 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.
First Air Date : 2014-03-09
Last Air date : 2020-04-20
Runtime : 57 minutes
Genre : Documentary
Cast : Neil deGrasse Tyson
Crew : Coby Greenberg (Co-Producer), Alan Silvestri (Original Music Composer)
Quality : 
Subtitles :
- Season 1 : Episode 12014-03-09
- Season 1 : Episode 22014-03-16
- Season 1 : Episode 32014-03-23
- Season 1 : Episode 42014-03-30
- Season 1 : Episode 52014-04-06
- Season 1 : Episode 62014-04-13
- Season 1 : Episode 72014-04-20
- Season 1 : Episode 82014-04-27
- Season 1 : Episode 92014-05-04
- Season 1 : Episode 102014-05-11
- Season 1 : Episode 112014-05-18
- Season 1 : Episode 122014-06-01
- Season 1 : Episode 132014-06-08
