3M heads to trial in ‘existential’ $143B forever-chemicals litigation

You are referring to Teflon, there's some confusion with the differences in toxicity between the chemical used in the final products (today at least) and the chemical used in manufacturing. Although the human impact is only subtly different (that in theory it makes no personal difference whether or not you buy such products, which is a worse position to be in than it sounds)...

As a non-chemist I don't claim to have a comprehensive understanding, but as far as I can tell: PTFE (Teflon) is found in consumer products today, and has not been directly linked to cancer yet, i.e if you eat teflon (and you have) it will supposedly just pass through your gut in an inert fashion. PFOA and more generally PFAS are used to manufacture PTFE, these are known carcinogens according to independent studies and (allegedly) internally by 3Ms own research, unfortunately PFOA is also in your blood and my blood, not because you ate teflon from a frying pan, but because once it's in the environment it doesn't get broken down, and so inevitably we end up ingesting it.

The reason we have to generalise to the group of chemicals "PFAS", is because once PFOA specifically was found to be problematic companies looked for similar alternatives, but these have also found to cause similar issues.

To complicate matters the PTFE in your non-stick frying pan can also releases PFOA if heated high enough, supposedly the threshold is around 300 degrees C, however it has been found that this threshold varies between products and can be realistically reached under in "normal" cooking scenarios, but usually when someone accidentally dry heated a frying pan too much, or is just plain cooking on too high a temperature. The side effects of being exposed to PFOA in this way are supposed to feel similar to catching a cold that disappears fairly quickly, and is often mistaken as such, I presume this is because it's vaporised.

Even knowing all this (that provided you don't nuke your cookware it likely makes no personal difference) I've still decided to personally go down the stainless steel route, it's not very scientific, but the relationship between PTFE and PFOAs is close enough, and it flakes off my frying pans frequently enough that I've decided I don't want to keep on ingesting it only to find out later that it's also a problem. Although stainless is not hazard free, because you can get problems with metals leaching into the food and have to be careful with acidity, and also make sure you buy high quality pans. They also require more skill to cook with without destroying them, but ultimately last indefinitely if you can take care of them.

The main problem with continuing to use PTFE in products is the indirect cost to the environment and human health through the "externalities" of manufacturing.

Dental floss is easy - the widely available/cheap waxed Reach floss tested negative for PFAs[1], and it does a better job of cleaning too. The non-stick flosses miss stuff for me.

1: https://www.mamavation.com/beauty/toxic-pfas-dental-floss-to...

Same here, additionally reducing plastic packaging in our food purchases has been a constant effort. Glass milk jugs, baby bottles, etc. It's probably only touching the margins, but we're trying.

I think maybe we're confusing terms here. Breaking up a company normally means separated into smaller existing companies. If you buy 3m's candy bar division, you still might be on the hook for the forever chemicals the candy shop dumped in the river.

If you're just talking about dissolving a company and selling off the tangible assets, not selling off functional business units then I agree, liability doesn't follow material Goods. This generally isn't considered breaking up a company.

Breaking up a large company into smaller ones during bankruptcy does not by default absolve the smaller companies of liability. Courts can add bankruptcy settlement terms that absolve a company of liability moving forward, but these can be applied to the company at all as a whole or the smaller businesses if it is broken up.