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If you find a layer in
the earth that indicates the boundary of the first or
last time that the fossils of any species can be found, you mark it with
a "golden spike." You drive it into the
rock with a hammer
the earth that indicates the boundary of the first or
last time that the fossils of any species can be found, you mark it with
a "golden spike." You drive it into the
rock with a hammer
Full Transcript
00:00:01.000 --> 00:00:03.102
If you find a layer in
the earth that indicates
00:00:03.136 --> 00:00:06.272
the boundary of the first or
last time that the fossils of
00:00:06.305 --> 00:00:08.141
any species can be found,
00:00:08.174 --> 00:00:11.678
you mark it with
a "golden spike."
00:00:12.245 --> 00:00:14.648
You drive it into the
rock with a hammer.
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Movie Summary
"Cosmos: A Spacetime Odyssey" returns for a second season. Ann Druyan, original creative collaborator to Carl Sagan, serves as executive producer.