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[The Mystery of the Deep-Sea Mammoth Tusk]-[Mystery Mammoth Tusk]

Wow in the World · B1 · 2022-03-21

Preschool Enlightenment
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📋 Summary

The Discovery of an Ancient Mystery

In this episode of Wow in the World, hosts Mindy Thomas and Guy Raz embark on a scientific investigation into an unexpected discovery: an elephant tusk found 10,000 feet below sea level and 150 miles from shore. The mystery begins when the duo receives a letter from researchers at the Monterey Bay Aquarium Research Institute, who recovered the artifact during a deep-sea exploration mission. The scientists, initially looking for "gelatinous zooplankton," were baffled to find such an exotic object resting on the ocean floor.

Unraveling the Genetic Code

To identify the origins of the tusk, Mindy and Guy Raz visit the eccentric Grandma G-Force. They utilize a "DNA testing machine" (which Grandma G-Force had previously dismissed as a gift) to analyze the sample. The results provide a surprising revelation: the object is not from an elephant, but from a mammoth.

During their investigation, Mindy and Guy Raz explain the distinction between these species. They note that while mammoths are related to elephants, they are not the same species, comparing the relationship to that of humans and chimpanzees. Further analysis dates the tusk to over 100,000 years ago, placing it during the Paleolithic era when continents like Asia and America were connected by "huge ice sheets."

The Hypothesis: A Journey Through Time

Mindy proposes a compelling hypothesis regarding how the tusk arrived at such a depth. She suggests that approximately 100,000 years ago, a herd of woolly mammoths was migrating across the frozen Pacific Ocean. After one mammoth perished, its remains were preserved by the ice. Over millennia, as the ice sheets melted, the remains gradually sank to the ocean floor.

Guy Raz adds scientific depth to their investigation by explaining how scientists can reconstruct a mammoth's life history through its tusks. Because tusks grow in layers—similar to how one can "tell the age of a tree by counting its rings"—researchers can determine the animal's age, whether it produced offspring, and even details about its diet and migratory environment.

Scientific Validation and Resolution

The mystery reaches a conclusion when a second letter arrives from the research institute. The scientists confirm the hosts' hypothesis after successfully recovering the rest of the tusk using a submarine equipped with "robotic hands." By creating a "3D digital copy" of the tusk, the researchers were able to confirm that the remains were likely shifted by ocean currents over thousands of years before settling at the site of discovery.

This episode serves as a testament to the power of scientific inquiry and the excitement of paleontology. By combining the curiosity of the Wowzers with real-world research methods, Mindy and Guy Raz successfully solve the mystery of the deep-sea mammoth, proving that even a "tiny sample" can tell a monumental story about Earth's ancient history.

🎯Key Sentences

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It's going to be a November to remember.
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But for now, let's get on with the show.
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How on earth could there be an elephant tusk all the way out here?
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I tell you, I thought I might have to throw away the whole typewriter.
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Open it up and find out.
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📝Key Phrases

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music to your ears
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get on with the show
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How on earth
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bone dry
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read it out loud
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📖 Transcript

Grownups, Wondery Plus subscribers can listen to Wow in the World early and ad-free right now.
Join Wondery Plus in the Wondery app or Wondery Kids Plus on Apple Podcasts.
Hey, Wowzer fans, Mindy here.
And before we start the show, I gotta let you know that this November, with a special new episode featuring our friends at Circle Round and Terrestrials on Radiolab for Kids,
And don't miss when Elmo from Sesame Street stops by Wow in the World to make us all belly laugh on November 24th.
Oh, but that's not all, Reg.

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