PBS Space Time

Why We Might Be Alone in the Universe

Season 5 Episode 38 | 12m 24s

Why does it appear, that humanity is the lone intelligence in the universe? The answer might be that planet Earth is more unique than we've previously assumed. The rare earth hypothesis posits exactly this - that a range of factors made Earth exceptionally unusual and uniquely able to produce intelligent life.

Aired: 11/06/19

Rating: NR

Video has closed captioning.

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