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[Time-Traveling to Ancient Greenland: Unlocking the Secrets of Permafrost DNA]-[Greenland Beach Day (12/23/24)]

Wow in the World · B1 · 2024-12-23

Preschool Enlightenment
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📋 Summary

The Quest for a Majestic Photo

In this episode of Wow in the World, Guy Raz embarks on a mission to complete an online photo challenge by capturing an image of something "beautiful and majestic." Initially intending to photograph an African elephant at the zoo, he discovers that the safari zone is closed for renovations. Mindy, ever the adventurous guide, proposes an alternative: traveling to Greenland. While Dennis and Guy Raz are initially skeptical—confusing the country with an amusement park—Mindy reveals a scientific breakthrough: scientists have discovered that Greenland, now a frozen tundra, was once a lush, wildlife-rich environment 200 million years ago.

The Science of Permafrost and DNA

The core of this journey centers on the study of "permafrost," which Mindy defines as "Earth that's been completely frozen for more than two years." By extracting DNA from these frozen samples, researchers have uncovered a prehistoric record of life. Mindy explains that DNA acts as an "instruction manual that lives inside every living thing." Remarkably, scientists successfully identified DNA from 135 different species in a permafrost sample that was two million years old—doubling the previous record for the oldest DNA ever collected, which was previously held by a one-million-year-old mammoth bone.

Journeying Through Geological Time

Using the "Wow machine," the trio attempts to travel back in time. Their first attempt lands them in modern-day Greenland, a frigid, snowy desert. After recalibrating the coordinates, they successfully arrive in a period two million years in the past. To their amazement, the landscape is transformed into a vibrant ecosystem. While they do not find modern African elephants, they encounter "mastodons," which Mindy describes as close relatives of the elephant that are "just a little hairier."

A Prehistoric Snapshot

As they explore this ancient Greenland, the team identifies various species whose presence was confirmed by the permafrost DNA research, including the arctic hare, birch trees, and caribou. The adventure culminates in a chaotic, humorous encounter with a real mastodon. Despite the danger, Guy Raz manages to capture his photograph, successfully completing his challenge. The episode serves as a fascinating look at how modern genetic science allows us to "read" the history of our planet, transforming our understanding of regions like Greenland from barren ice to once-thriving, prehistoric utopias.

🎯Key Sentences

1
So where do you think we should go first?
2
What are you two doing at the zoo?
3
I've been putting it to use
4
I don't know how to break this to you but...
5
Anything for a photo challenge.
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📝Key Phrases

1
put to use
2
break this to you
3
bursting with life
4
come clean
5
jam-packed
Expand All

📖 Transcript

Grown -ups, 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.
Oh, I'm so excited to be here at the Zoo Reg.
So where do you think we should go first?
We could visit the Lion Den that's over there.
Or let's see. Oh there's a giraffe zone.

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