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Caterpillar found to eat shopping bags, suggesting solution to plastic pollution

phys.org

11–20 of 329 posts

Re: Caterpillar found to eat shopping bags, suggesting solution to plastic pollution

#11
post #8

Would be good to have plastic waste broken down, but be careful not to take down our whole civilization with it. Almost everything today is made out of plastic...

In many post-apocalyptic works of fiction it's a disease that wipes out much of humanity; what if instead it was a bacteria or pest that rapidly consumes all our plastic that causes civilization to collapse?

Re: Caterpillar found to eat shopping bags, suggesting solution to plastic pollution

#12
post #5

What exactly comes out the other end? Small pieces of plastic?

"The analysis showed the worms transformed the polyethylene into ethylene glycol, representing un-bonded 'monomer' molecules." Moderately toxic, but breaks down in the air in about 10 days. Used in antifreeze. https://en.wikipedia.org/wiki/Ethylene_glycol

"it breaks down in air in about ten days, and in water or soil in a few weeks."

That is probably the best bit.

Re: Caterpillar found to eat shopping bags, suggesting solution to plastic pollution

#13
post #5

What exactly comes out the other end? Small pieces of plastic?

"The analysis showed the worms transformed the polyethylene into ethylene glycol, representing un-bonded 'monomer' molecules." Moderately toxic, but breaks down in the air in about 10 days. Used in antifreeze. https://en.wikipedia.org/wiki/Ethylene_glycol

Interesting... is this why I've never heard any issues with the amount of windshield washer fluid that is used? I got through many litres every winter.

Re: Caterpillar found to eat shopping bags, suggesting solution to plastic pollution

#15
post #8

Would be good to have plastic waste broken down, but be careful not to take down our whole civilization with it. Almost everything today is made out of plastic...

That reminds me of a certain thing the Puppeteers did in the Ringworld books.

Re: Caterpillar found to eat shopping bags, suggesting solution to plastic pollution

#16
"A chance discovery occurred when one of the scientific team, Federica Bertocchini, an amateur beekeeper, was removing the parasitic pests from the honeycombs in her hives. The worms were temporarily kept in a typical plastic shopping bag that became riddled with holes."

What a great accident.

Re: Caterpillar found to eat shopping bags, suggesting solution to plastic pollution

#17
post #9

"To confirm it wasn't just the chewing mechanism of the caterpillars degrading the plastic, the team mashed up some of the worms and smeared them on polyethylene bags, with similar results." A disturbing but effective way to test the hypothesis.

Yeah, pretty horrible.

Re: Caterpillar found to eat shopping bags, suggesting solution to plastic pollution

#18
post #16

"A chance discovery occurred when one of the scientific team, Federica Bertocchini, an amateur beekeeper, was removing the parasitic pests from the honeycombs in her hives. The worms were temporarily kept in a typical plastic shopping bag that became riddled with holes." What a great accident.

The history of science is full of such accidents, the discovery Penicillin being one of the most famous.

http://www.kidsdiscover.com/quick-reads/penicillin-found-fun...

Re: Caterpillar found to eat shopping bags, suggesting solution to plastic pollution

#19
post #8

Would be good to have plastic waste broken down, but be careful not to take down our whole civilization with it. Almost everything today is made out of plastic...

That reminds me of a certain thing the Puppeteers did in the Ringworld books.

To superconductors.

Re: Caterpillar found to eat shopping bags, suggesting solution to plastic pollution

#20
post #8

Would be good to have plastic waste broken down, but be careful not to take down our whole civilization with it. Almost everything today is made out of plastic...

That reminds me of a certain thing the Puppeteers did in the Ringworld books.

Or Andromeda Strain.
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