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[The Fascinating Science of Fingerprints: A Wow in the World Investigation]-[Two Whats?! And A Wow! - FINGERPRINTS!]

Wow in the World · B1 · 2020-10-16

Preschool Enlightenment
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📋 Summary

Exploring the Science of Fingerprints

In this episode of Wow in the World, hosts Mindy Thomas and Guy Raz dive into the scientific nuances of fingerprints through their interactive game show, Two What’s and a Wow. The episode highlights the unique biological characteristics that make fingerprints a subject of constant fascination.

The Core Mystery: Koala vs. Human Prints

The central focus of the episode is a scientific trivia challenge regarding the nature of fingerprints. The contestants were presented with three statements, and the "true wow" was that koala fingerprints and human fingerprints are almost indistinguishable from one another.

As explained during the reveal, koalas share many "koala-ties" with humans regarding their dermatoglyphics. They possess similar fingerprint patterns, and just like humans, each individual koala has a unique set of prints. This scientific reality is so striking that it has reportedly caused confusion at crime scenes, showcasing how evolutionary biology can produce convergent traits in species that are otherwise quite different.

Debunking Common Myths

To provide a comprehensive understanding, the hosts corrected two other common misconceptions:

  • Identical Twins: Contrary to popular belief, identical twins do not share identical fingerprints. While they share much of their DNA and physical characteristics, their fingerprints remain unique to the individual.
  • The World's Oldest Fingerprint: While the trivia option suggested a fish sculpture, the true historical context is even more intriguing. The oldest discovered fingerprint is attributed to a Neanderthal who used glue to create a tool approximately 80,000 years ago. The adhesive properties of the glue effectively preserved the print, allowing modern scientists to observe it today.

Practical Science: Operation Fingerprint Detective

To encourage hands-on learning, the episode concludes with an activity titled Operation Fingerprint Detective. Mindy and Guy Raz invite listeners to investigate their own unique prints using simple household items:

  1. Methodology: Listeners are instructed to use flour or baby powder on their index finger, then transfer the print onto a piece of clear tape.
  2. Observation: Once the print is visible on the tape, participants are encouraged to identify their specific pattern type—whether it is a loop pattern, a whirl pattern, or an arch.
  3. Comparative Analysis: By comparing their prints with family members, listeners can observe the biological diversity of human fingerprints firsthand.

This episode not only provides a fun, educational experience for young "Wowzers" but also emphasizes the importance of curiosity and scientific observation in understanding the world around us.

🎯Key Sentences

1
That's it.
2
But for now, let's get on with the show.
3
Hold, please.
4
Is this correct?
5
There must be something wrong with this
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📝Key Phrases

1
music to your ears
2
get on with the show
3
go bonker balls
4
get this game show on the road
5
hit the lights
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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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