6 ms·

Me neither.That is basically part of corpse in your home, right?

by mongol 2y ago

creshal 2y ago
Limestone is generally made of dead corals and marine animals, this batch just included a slightly wider variety of species than average.
- __MatrixMan__ 2y ago
  This makes it especially fun to climb on, there are pretty little shell indentations and such to appreciate on your way up.
- 13of40 2y ago
  The magic ingredient in concrete is cement and the magic ingredient in cement is limestone, so our cities are literally built out of bones. Sleep tight.
  - outworlder 2y ago
    Interesting. Cities are built on death and suffering, literally and figuratively.
    - dwaltrip 2y ago
      Much (most?) of the entire biosphere of earth comes from billions of years of life forms killing and eating other life forms. The universe is a rough place. Beautiful in many ways, but quite gnarly.
      - dotancohen 2y ago
        > The universe is a rough place. Beautiful in many ways, but quite gnarly. It's wondrous, with treasures to satiate desires both subtle and gross. But it's not for the timid.
    - vkou 2y ago
      Unless you're a primary producer (photosynthesize your own food, or something of the sort), all life is built on death and suffering. We eat what we kill.
      - kragen 2y ago
        except, hooray for parasites and scavengers!
    - abeppu 2y ago
      ... in fairness, there's not really any particular reason to believe that the organisms which contributed to limestone suffered any more than their peers who didn't. And insofar as all the elements that are components of life exist in finite quantities which get recycled on earth, all life is built on death.
  - kragen 2y ago
    this is a mistake i made for many years, so hopefully i can save someone else: bones and teeth are calcium phosphate, while corals and seashells and eggshells and limestone are calcium carbonate. that's why you can't dissolve teeth or chicken bones in vinegar. cement is made by calcining calcium carbonate (with silicates), not calcium phosphate mineral calcium phosphate (apatite) is broken down for fertilizer with sulfuric acid. it is not used for cement to my knowledge the phosphate and carbonate of calcium are not especially similar, not any more than the hydroxide and sulfate of sodium, or the sulfide and hydroxide of iron in summary, your cities are not literally built out of bones
    - 13of40 2y ago
      Valid point, but let's tease that apart: We're talking about seashells and coral, not the sort of bones you'd find in a mammal, but still the skeletal structures of animals. So maybe "skeletons" not "bones". Same difference.
      - kragen 2y ago
        true, your cities are literally built out of skeletons
        liuesnvica 2y ago
        [flagged]
  - mr_toad 2y ago
    > so our cities are literally built out of bones. Sleep tight. They moved the cemetery but they left the bodies!
- dclowd9901 2y ago
  Yep. I have a few seashells poking out of my bathroom tile. It’s not (ugly) travertine though.
- NovemberWhiskey 2y ago
  Uh, sure, but that doesn't look like "an identifiable part of a human head" that's going to be catching your eye when you're using the bathroom.
surfingdino 2y ago
It's not uncommon to build using human remains or on top of the human remains. Quite a few plague pits got uncovered in London in recent years by developers wanting to build on whatever scrape of land they can find. Developers are required to allow some time for researchers to go through the site before they are free to then pour concrete over them and erect their towers.
- berkes 2y ago
  I live in a city that was founded by the Romans around the time of Christ. But has been abandoned and rebuild a couple of times (by a.o. Charlemagne). Everytime something is built, dug, or torn down, they find old or ancient foundations. Sometimes underneath old foundations. Fortresses underneath mideaval cellars, city walls below a casino. A Bathouse in a parking garage. It makes building stuff, quite cumbersome. And I can only imagine the amount of ancient foundations that have been quickly eradicated, so that a real estate developer could keep on schedule to maximize profits.

Me neither.That is basically part of corpse in your home, right?

by mongol 2y ago

Me neither.That is basically part of corpse in your home, right?

Limestone is generally made of dead corals and marine animals, this batch just included a slightly wider variety of species than average.

__MatrixMan__ 2y ago
This makes it especially fun to climb on, there are pretty little shell indentations and such to appreciate on your way up.
13of40 2y ago
The magic ingredient in concrete is cement and the magic ingredient in cement is limestone, so our cities are literally built out of bones. Sleep tight.
- outworlder 2y ago
  Interesting. Cities are built on death and suffering, literally and figuratively.
  - dwaltrip 2y ago
    Much (most?) of the entire biosphere of earth comes from billions of years of life forms killing and eating other life forms. The universe is a rough place. Beautiful in many ways, but quite gnarly.
    - dotancohen 2y ago
      > The universe is a rough place. Beautiful in many ways, but quite gnarly. It's wondrous, with treasures to satiate desires both subtle and gross. But it's not for the timid.
  - vkou 2y ago
    Unless you're a primary producer (photosynthesize your own food, or something of the sort), all life is built on death and suffering. We eat what we kill.
    - kragen 2y ago
      except, hooray for parasites and scavengers!
  - abeppu 2y ago
    ... in fairness, there's not really any particular reason to believe that the organisms which contributed to limestone suffered any more than their peers who didn't. And insofar as all the elements that are components of life exist in finite quantities which get recycled on earth, all life is built on death.
- kragen 2y ago
  this is a mistake i made for many years, so hopefully i can save someone else: bones and teeth are calcium phosphate, while corals and seashells and eggshells and limestone are calcium carbonate. that's why you can't dissolve teeth or chicken bones in vinegar. cement is made by calcining calcium carbonate (with silicates), not calcium phosphate mineral calcium phosphate (apatite) is broken down for fertilizer with sulfuric acid. it is not used for cement to my knowledge the phosphate and carbonate of calcium are not especially similar, not any more than the hydroxide and sulfate of sodium, or the sulfide and hydroxide of iron in summary, your cities are not literally built out of bones
  - 13of40 2y ago
    Valid point, but let's tease that apart: We're talking about seashells and coral, not the sort of bones you'd find in a mammal, but still the skeletal structures of animals. So maybe "skeletons" not "bones". Same difference.
    - kragen 2y ago
      true, your cities are literally built out of skeletons
      - liuesnvica 2y ago
        [flagged]
- mr_toad 2y ago
  > so our cities are literally built out of bones. Sleep tight. They moved the cemetery but they left the bodies!
dclowd9901 2y ago
Yep. I have a few seashells poking out of my bathroom tile. It’s not (ugly) travertine though.
NovemberWhiskey 2y ago
Uh, sure, but that doesn't look like "an identifiable part of a human head" that's going to be catching your eye when you're using the bathroom.

surfingdino 2y ago

It's not uncommon to build using human remains or on top of the human remains. Quite a few plague pits got uncovered in London in recent years by developers wanting to build on whatever scrape of land they can find. Developers are required to allow some time for researchers to go through the site before they are free to then pour concrete over them and erect their towers.

berkes 2y ago
I live in a city that was founded by the Romans around the time of Christ. But has been abandoned and rebuild a couple of times (by a.o. Charlemagne). Everytime something is built, dug, or torn down, they find old or ancient foundations. Sometimes underneath old foundations. Fortresses underneath mideaval cellars, city walls below a casino. A Bathouse in a parking garage. It makes building stuff, quite cumbersome. And I can only imagine the amount of ancient foundations that have been quickly eradicated, so that a real estate developer could keep on schedule to maximize profits.