Why Trees Are Living Climate Records
Season 47
Episode 1
About the Episode
Trees are living records of Earth’s climatic past. Play NOVA’s Polar Lab to learn how trees grow by simulating how they respond to different environments.
Aired:
| Expires: | Runtime: 1m 29s
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Extras
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Critical Condition: Health in Black America Preview
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How Deadly Was the Musket?
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Ultimate Crash Test: Impact Preview
Forensic science is put to the test after the first-ever staged multi-vehicle pileup.0:30 -
When Machines Prescribe
Investigate medical algorithms in which the patient’s race drives decisions.17:19 -
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Ultimate Crash Test: Countdown Preview
A first-of-its-kind experiment aims to stage a multi-vehicle pileup to gain new data on car safety.0:30 -
UFO Sightings: How Scientists are Trying to Capture More Data
To better study the UFO phenomenon, science needs more eyes on the skies.5:00
