@Ailbhe
Well the thing about microplastics is they're not visable with the human eye. I can't speak to the coffee pods actually, but I'm basing this on some digging I did after a debate with family about "biodegradable" plastic bags. Basically all the research that I could find was done by the plastics companies or industry bodies, and it was all "in the lab under x-y deg C, certain pH etc. I'd be interested to see some real independent research.
@renwillis @sinituulia
@econads @renwillis @sinituulia "biodegradable plastics" and "bioplastics" aren't the same thing, the plastic bags that were a big deal in the UK 20 years ago were made of quite different materials from the compostable things now. If you put anything in a "biodegradable" bag in the attic, it's surrounded by a pile of tiny fragile flakes now. And if anything compost heaps preserve them.