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[The Ancient Wonders of Jellyfish: A 'Two Whats and a Wow' Exploration]-[Two Whats?! And A Wow! - Water Jellyfish Made Of? (8/1/25)]

Wow in the World · B1 · 2025-08-01

Preschool Enlightenment
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📋 Summary

The Ancient History of Jellyfish

In this episode of Wow in the World, hosts Mindy Thomas and Guy Raz delve into the fascinating biology and history of jellyfish through their signature game, "Two Whats and a Wow." The central scientific revelation presented to listeners is that jellyfish have been on Earth before there were dinosaurs. Scientific evidence, specifically the discovery of fossils, confirms that these creatures have existed for over 500 million years, making them some of the oldest animals on our planet.

Debunking Myths and Exploring Space

The game challenged contestants to distinguish between scientific facts and "made-up whats."

  • The Heart Myth: While option A suggested jellyfish have three hearts, the hosts clarified that jellyfish actually possess no hearts at all, noting that it is octopuses that are known for having three.
  • Jellyfish in Space: Addressing option B, the hosts explained that while jellyfish haven't technically "been to the moon," they have traveled to space. In 1991, NASA launched a space shuttle mission carrying 2,478 "jellyfish babies, also known as polyps." By the conclusion of the mission, the population had multiplied to over 60,000, all orbiting the Earth.

Scientific Challenge: Understanding Buoyancy

Beyond the trivia, the episode offers a practical experiment titled "Boy-o-buoyancy" to help listeners understand why objects float differently in various environments. The hosts explain that the presence of salt in ocean water increases density, making things more "buoyant or floatable" compared to fresh water. To test this, they suggest a simple experiment: filling two glasses with water, adding a significant amount of salt to one until it is fully dissolved, and dropping a grape into both to observe the differences in buoyancy.

Conclusion

The podcast concludes by encouraging young listeners to continue exploring the world around them and to share their own "wows" by contacting the show. By blending historical biology with interactive space science and simple physics experiments, the episode highlights the incredible longevity and adaptability of jellyfish, cementing their status as a true "wow" of the natural world.

🎯Key Sentences

1
I can't wait to visit there
2
That sounds amazing
3
We want to hear about it.
4
We can't wait to hear from you.
5
That's it for now.
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📝Key Phrases

1
up close
2
mind your manners
3
gear up to
4
make a breeze
5
have your back
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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 and Guy Raz here, and before we start the show, we were just talking about places on our planet that make us say wow.
Tell them about our favorite place, Guy Raz.
Sure, Mindy. Well, a place on our planet that wows me is Sonoma Coast State Park.
It's in California, but when you visit there, some days it looks like you're in tropical Hawaii.

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