Atelopus-zeteki

It was some time ago that I read of that, so the details are fuzzy. And here's what I found:

https://nypost.com/2019/07/25/10000-year-old-engraved-stone-could-be-worlds-oldest-lunar-calendar/

“A 10,000-year-old engraved stone could be a lunar calendar. The rare pebble — found high up in the mountains near Rome, Italy, the hammer-stone was found on top of Monte Alta in the Alban Hills. It’s believed that our early ancestors would’ve used the stone to keep track of the moon’s cycles. Notches were engraved “as if they were being used to count, calculate or store the record of some kind of information. And these notches — which total either 27 or 28 — suggest the stone’s engraver used the pebble to track lunar cycles.” ref

It could also have been The Ishango Bone (https://www.thedailybeast.com/the-ishango-bone-the-worlds-oldest-period-tracker/)

Cool, well I could just give up, but that's not my style. So point of use filtration for now, and keep working on solving the larger problems piece by piece.

still projecting, I see.

Yay, keep eff'ing up corp.soc.media. We'll gladly absorb your disgruntled users.

No argument there. This crap should not be in our environment at all. How do we get 3M, DuPont, etc to pay for our filters?

governmentsecrets.pdf , Ha! Gotcha!

Agreed, they are more expensive. Are they the most expensive? No. Do you have a better short term alternative? One option would be to use distillation. It would be lovely to remove PFAS entirely from the planet, but that isn't happening in the short term, unless you are aware of something I'm not. Please share? I'm just trying to find ways to reduce the toxic load for myself and others. Thanks!

Here is EWG's article on the topic, which gives similar recommendations: https://www.ewg.org/research/getting-forever-chemicals-out-drinking-water-ewgs-guide-pfas-water-filters

When you said "only the most expensive", I got concerned. Then I went to the website (https://cyclopure.com/product-category/store/), and see the countertop Purefast cartridge is $40-45. So I wonder what you are actually finding problematic here?

From your first link. second paragraph: "“These $45 filters can provide up to 65 gallons of PFAS-free water, replacing 700 single-use water bottles,” said CycloPure chief executive officer Frank Cassou. The cartridges will be available in early April 2022."

I hadn't seen this comment, thanks for making it.

FOSS Period Tracking Apps Exist: (there may be others, as well)

https://fossdroid.com/a/bluemoon.html

https://fossdroid.com/a/mensinator.html

https://github.com/TotallyMonica/foss-period-tracker

Also paper and pencil.

Also the oldest known "writing" is a stick with 28 notches on it.

Santacon.info - gotta be in Jolly good shape for SantaCon!!

Also eggs existed in other species long before chickens.