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

phys.org

81–90 of 329 posts

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

#81
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.

Roald Dahl comes to mind D:

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

#82
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.

More or less horrible than choking the earth with plastic refuse?

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

#83
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...

I like how LSD was discovered [0]. It's so potent that it can be absorbed just by skin contact, that's why police must use gloves when seizing it.

Imagine yourself coming home with your bicycle and having a massive (250 ug) LSD trip only having experienced it once, pretty scary and interesting at the same time [1].

[0]: https://en.wikipedia.org/wiki/Albert_Hofmann#Discovery_of_LS...

[1]: http://www.thegooddrugsguide.com/articles/lsd_accident.htm

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

#85

I am skeptical that any sort of bacteria/insect based plastic decomposition project will address the problems with plastic waste. The biggest problem with plastic is not with the products that make it into the landfill, where bacteria could be used. The problem is with what happens when they don't make it into a landfill, and they end up as basically permanent pollutants in the water.

I, for one, have never understood the problem with landfills. There's tons of unused space left, and landfills take up a tiny fraction of that. Who cares if we make a trash hill somewhere and styrofoam sits there for a million years?

Think of all the carbon that is sequestered because of landfills. Makes you think twice when recycling paper products.

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

#87
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

Plastics are mostly fairly simple molecules but long chains. I wonder how many variants these worms can eat?

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

#88
post #57

Earlier quoted context omitted.

I think he felt bad about the caterpillars being mashed up.

Life is not fair, never has been, never will be.

Grand. We're off the hook then. No need to attempt to make it any fairer. Phew!

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

#89
post #67

Earlier quoted context omitted.

Yeah, pretty horrible.

Ever killed a fly because it annoyed you? This is not much different. In fact, this was done for science.

Do we really need the /s tag on something so obvious?

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

#90

Earlier quoted context omitted.

I, for one, have never understood the problem with landfills. There's tons of unused space left, and landfills take up a tiny fraction of that. Who cares if we make a trash hill somewhere and styrofoam sits there for a million years?

I think the biggest issue people have with landfills is that it's basically banking on the things being dumped there not having an adverse effect on the environment, ground water, etc over a long period of time. Even if no one really knew/knows/ensures what is entirely safe to dump.

Yeah, I'm not sure why anyone would think burying waste underground is an okay solution. It made sense when most household waste was fabrics, wood, old food etc but nobody stopped quick enough to evaluate the impacts when our waste got more and more toxic and non-biodegradable. I've recently move to the Netherlands from the UK and was amazed to discover they don't recycle household metal items (e.g. soft drinks cans, food cans etc). That's been a staple of the recycle industry for as long as I can remember in the UK, maybe it's a business opportunity waiting to happen in Holland :)
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