144
TIL some cities (like NYC) pump nitrogen into their phone lines to keep water out. (hackaday.com)
submitted 6 months ago by Shadow@lemmy.ca to c/todayilearned@lemmy.ml
11 comments fedilink hide all child comments
you are viewing a single comment's thread
view the rest of the comments
[-] DumbAceDragon@sh.itjust.works 2 points 6 months ago

I would always see those canisters around the city and wondered what they were. TIL.

this post was submitted on 14 Mar 2024
144 points (98.6% liked)

Today I learned

7585 readers
1 users here now

founded 4 years ago
MODERATORS
sonder@lemmy.ml