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[The Sticky Science of Slug Slime and Surgical Innovation]-[Stick it Right Here, Sluggo! (Encore - 1/15/18)]

Wow in the World · B1 · 2018-01-15

Preschool Enlightenment
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📋 Summary

From Slug Slime to Surgical Breakthroughs: The Science of Bio-Inspired Adhesives

In this episode of Wow in the World, Mindy and Guy Raz explore the fascinating intersection of nature and medical technology, sparked by a clumsy accident involving a sugar-free Jello sculpture of the Leaning Tower of Pisa.

The Problem with Traditional Adhesives

When Mindy accidentally destroys Guy Raz’s meticulously crafted Jello sculpture, the duo faces a common dilemma: how to reattach materials that are inherently slippery, jiggly, and wet. Guy Raz notes that traditional materials like glue or tape are insufficient for such surfaces. In the medical field, this is a profound challenge. As Mindy explains, doctors often struggle with "stitching or staples" when performing life-saving operations, as these methods can cause further damage to delicate organs. Furthermore, "super glue" is unsuitable because it is "super rigid" and only works on dry surfaces, making it ineffective for the moist, dynamic environment of the human body where organs are constantly moving.

The Dusky Arion Slug: Nature’s Engineer

To solve their Jello dilemma, the duo embarks on a whimsical journey to the Black Forest of Germany to study the Dusky Arion slug. Mindy highlights that this slug possesses a unique defense mechanism: when scared, it secretes a "super strong, stretchy slime" that acts as a natural glue. This mucus is essential for the slug's survival, as it prevents predators from easily plucking it from the ground. By collecting this "mucousy glue," the pair manages to repair the Jello sculpture, demonstrating the incredible adhesive properties of the substance.

Bio-Inspired Engineering at Harvard

The episode transitions to the real-world scientific applications of this phenomenon. Mindy describes the work of Dr. Jianyu Li and his team at Harvard’s Wyss Institute for Biologically Inspired Engineering. These scientists looked to nature to solve the surgical problem of sealing "blood and guts." By analyzing the properties of slug slime, they engineered a new, flexible "sticky gel" that mimics the slug's secretion.

This innovative material is described as having the "sticking power of super glue" while remaining "stretchier than even the stretchiest rubber band." Unlike traditional adhesives, this bio-inspired gel works effectively on "slippery, wet surfaces" like human organs, bones, and cartilage. Because it is flexible, it can withstand the constant "heart-pumping action" without breaking.

The Future of Medical Healing

This research represents a significant leap forward in surgical technology. Scientists have already successfully tested the gel on "pig hearts and rat livers" and are exploring its potential to "heal up tiny holes in the hearts of some babies." Furthermore, the team is working on a "biodegradable" version of the glue, which would disappear once the body has finished healing. This episode serves as a perfect example of how observing the natural world—even something as humble as a slug—can lead to groundbreaking advancements in human medicine.

🎯Key Sentences

1
It's going to be a November to remember.
2
Wait until the Guinness World Record Association finds out about this.
3
It's in the tip of my tongue.
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There's really never been anything like it.
5
I didn't want to straighten it up a little bit.
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📝Key Phrases

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music to your ears
2
on the tip of my tongue
3
if I do say so myself
4
rope me into
5
hang on a sec
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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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