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LOWERY:So, beneath our feetis the Earth's crust. The Earth's crustis layers of rock, 20 miles thick in most places, and these layers of rock,uh, can be read like a storyof the Earth's history. We can drill intothese layers, and we can recover samples, and we canuse that to understand how thingshave changed through the past. NARRATOR:In the 1950s and '60s, oil drillingin the Yucatán Peninsula unearthed samples that were richin a particular type of rock
Full Transcript
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LOWERY So beneath our feet is the Earth's crust
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The Earth's crust is layers of rock
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20 miles thick in most places
00:00:08.133 --> 00:00:10.006
and these layers of rock uh can be read
00:00:10.006 --> 00:00:13.999
like a story of the Earth's history
00:00:13.999 --> 00:00:14.009
We can drill into these layers and we can
00:00:14.009 --> 00:00:16.009
recover samples and we can use that to understand
00:00:16.009 --> 00:00:19.001
how things have changed through the past
00:00:21.333 --> 00:00:23.733
NARRATOR In the 1950s and '60s
00:00:23.733 --> 00:00:26.000
oil drilling in the Yucatán Peninsula
00:00:26.000 --> 00:00:29.533
unearthed samples that were rich in a particular type of rock
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Movie Summary
Science documentaries about various topics.
