These Boulders are Alive
Clip: Season 42 Episode 21 | 2m 48s
Dive down to rare stromatolites—key clues to the evolution of virtually all complex life.
Aired: 11/11/15
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Clip: Season 42 Episode 21 | 2m 48s
Dive down to rare stromatolites—key clues to the evolution of virtually all complex life.
Aired: 11/11/15
Problems Playing Video? | Closed Captioning