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[The Science of Plastic-Eating Worms and Mammalian Bowel Movements]-[Bag O' Worms & The Velocity Of Poop (Encore - 9/25/17)]

Wow in the World · B1 · 2017-09-25

Preschool Enlightenment
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📋 Summary

Uncovering the Scientific Wonders of the Natural World

In this episode of Wow in the World, hosts Mindy and Guy Raz explore two distinct yet fascinating scientific discoveries that bridge the gap between curiosity and real-world application. From the potential of plastic-eating larvae to the mechanics of mammalian digestion, the show highlights how observation can lead to groundbreaking solutions.

The Plastic-Eating Waxworm

The episode begins with an unconventional demonstration by Mindy, who introduces her pet "waxworm," Welda, which she claims consumes plastic grocery bags. This leads to a discussion about a discovery by scientist Frederica Bertocini of the Spanish National Research Council. While working with beehives, Bertocini noticed that waxworms—the larvae of wax moths—were capable of eating through the plastic bags in which she stored them.

Collaborating with researchers Paolo Bombelli and Christopher Howe at the University of Cambridge, scientists discovered that the waxworm's belly contains a specific protein capable of attacking the chemical composition of polyethylene, the material used in most grocery bags. Given that humans produce 8 million tons of this plastic annually, which is notoriously difficult to recycle, this discovery offers a glimmer of hope. The researchers hypothesize that these worms can break down the stubborn polyethylene and convert it into ethylene glycol, a liquid that can be repurposed for products like polyester fabric or antifreeze. While the hosts emphasize that this theory is still in the testing phase, it serves as a powerful example of how simple curiosity—noticing holes in a bag—can lead to potential solutions for global environmental issues.

The "Pooper-Duper" Science of Mammals

Shifting gears, Guy Raz introduces a study conducted by researchers David Hu and Patricia Yang from the Georgia Institute of Technology, who investigated the speed and mechanics of mammalian defecation. While the subject matter is inherently humorous, the underlying science is significant.

Through observing 34 different mammals at the Atlanta Zoo, including elephants, lions, and bears, the researchers determined that larger animals tend to defecate faster than smaller ones. They discovered that the digestive tracts of larger mammals are coated in a thicker, more slippery layer, which facilitates the process.

This research is not merely for laughs; it has medical implications. Understanding these physiological mechanisms could lead to new treatments for humans suffering from digestive pain or bowel-related health issues. Notably, David Hu was awarded the Ig Nobel Prize—an award that celebrates scientific research that makes people laugh before it makes them think—for his previous study on bladder emptying.

Conclusion: The Power of Curiosity

The episode concludes by reinforcing that science is driven by wonder and the willingness to ask "why." Whether it is questioning why a worm can digest plastic or measuring how long it takes for different species to go to the bathroom, Wow in the World illustrates that no question is too strange for scientific inquiry. By encouraging young listeners to share their own "wows" and observations, the show promotes a culture of lifelong learning, reminding us that even the most mundane observations can lead to significant scientific advancement.

🎯Key Sentences

1
what on earth are you doing with all those plastic bags?
2
I'm just whipping up a little breakfast
3
haven't I introduced you yet?
4
she can't get enough of them.
5
Are you sure you shouldn't be feeding it grocery bags?
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📝Key Phrases

1
music to your ears
2
whip up
3
during the course of
4
can't get enough of
5
under the assumption that
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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 got to 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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