8.8

Cosmos•Season 1•Episode 7

The Clean Room

8.8/10 · 2,015 votesApr 20, 201444 min

Ranked #12 of 13 in Season 1•−0.2 vs season avg

Discussion

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

Directed byBrannon Braga

Written bySteven Soter, Ann Druyan

Previous episodeE6 · Deeper, Deeper, Deeper Still Next episodeE8 · Sisters of the Sun

Seasons2

All 1 2

Season 1 Episodes13

E1 9.1

Standing Up in the Milky Way

E2 8.9

Some of the Things that Molecules Do

E3 9.0

When Knowledge Conquered Fear

E4 9.1

A Sky Full of Ghosts

E5 9.0

Hiding in the Light

E6 8.7

Deeper, Deeper, Deeper Still

E7 8.8Now viewing

The Clean Room

E8 8.9

Sisters of the Sun

E9 9.0

The Lost Worlds of Planet Earth

The Electric Boy

The Immortals

The World Set Free

Unafraid of the Dark

Cast2

Neil deGrasse Tyson

Self - Host

Ann Druyan

Crew3

Brannon Braga

Director

Steven Soter

Writer

Ann Druyan

Writer

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Episode Summary

"The Clean Room" is episode 7 of Cosmos season 1. It scored 8.8/10 from 2,015 votes, ranking #12 of 13 episodes this season (season average 9.0). Directed by Brannon Braga and written by Steven Soter, Ann Druyan, it aired on April 20, 2014.

Next: E8 · Sisters of the Sun Best of Season 1