Comment by close04
4 hours ago
> TLDR: Consequently many freshwater mussel species are now extinct
The problem with the DR part of TLDR is that you miss a lot of detail. There are more factors than just the button industry.
> To survive past the larvae stage, they must become parasites that attach themselves to fish. If the fish populations are declining, that oftentimes has an indirect effect on mussel abundance
> the U.S. Army Corps of Engineers deepened the rivers and constructed a system of dams, destroying the habitats of mussels that had evolved to live in shallower waters.
> Increasingly polluted waters also took a toll.
Regarding the dams, I recommend the book "Cadillac Desert" to anyone even remotely curious about the background and scale of water projects in the US. It's not boring despite the what the subject matter might suggest.
Yes, it's an outstanding book, well worth reading:
Cadillac Desert: The American West and Its Disappearing Water, by Marc Reisner, Penguin Books, 1986, 1993.
A recent perspective on this excellent book by Ryan Cooper is also very good. He says that journalists in the 1970s and 80s were infected with Reaganite ideology and made some mistakes. Worth reading:
https://prospect.org/2025/12/12/cadillac-desert-reconsidered...
That's about the US West. It might as well be a different country, with respect to water. East of, say, Omaha, the concern is more getting rid of water than collecting it.
Excellent book, seconded.
Regarding buttons, or rather 'buttony' (which used to mean the craft of making buttons), the UK has many regions that have historical claims to being the former button capital of the world. First it was Dorset, thanks to the sheep, then Yorkshire stole that business, then the Black Country (Birmingham) brought the full weight of the Industrial Revolution to the product.
This American/German story is just one Johnny-come-lately part of the epic story that is button making, albeit without a 'Cadillac Desert' grade book to put the story together for you.
The river I live next to had the same thing happen. The mussel populations aren't what they once were (said to be hundreds per square meter back in the 1800's). There was also button factories along the river, and they briefly tried pearl farming. The big problem was pollution, dams, etc. as you say. The river is better now than it's been since I was born - and more dams are being removed year by year.
Agreed.
Massachusetts has a nice page about the Eastern Pearlshell.
https://www.mass.gov/info-details/eastern-pearlshell
In the town of Sandisfield MA, I've found live mussels in the Clam River - which was named due mistakenly identity.
DR?
This comment interests me.
Over the 10 years I've frequented HN* regularly (usually multiple times daily), I too have been occasionally confounded by new-to-me abbreviations/acronyms, such that I've Googled them to find their meaning. I can't imagine asking the meaning of an such an unknown in a comment, for two reasons:
1. An answer depends on someone else's effort/time to furnish it. Why expect/hope someone's feeling generous enough to spend theirs since you're not willing to spend yours?
2. You have to revisit your query to see if someone has answered it; if not, you either abandon your quest or repeatedly revisit the unknown.
*Hacker News
Didn't read
It's sad, but the entire culture is devolving into requiring a dumbed down summary or tl;dr version of everything.
Those who really understood it need the least words to explain it.
>The problem with the DR part of TLDR is that you miss a lot of detail
But the part that confirms the audiences biases and earns upvotes made it through and that's what matters.
It's basically a more shameless version of most industry reporting if you think about it.
Best not to think about it though. The world is nicer that way.