Season 2 Episodes8
Cast1

Erik Dellums
Himself - Narrator
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Ranked #1 of 8 in Season 2•+0.4 vs season avg
The Earth was formed by a series of cataclysms without which we would not exist. Could the same events have created other earth-like planets elsewhere in the Universe inhabited by creatures like us?

Erik Dellums
Himself - Narrator
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"Birth of the Earth" is episode 8 of How the Universe Works season 2. It scored 8.5/10 from 110 votes, ranking #1 of 8 episodes this season (season average 8.1). It aired on August 29, 2012.