Shadow to Today I learned@lemmy.ml • 1 year agoTIL some cities (like NYC) pump nitrogen into their phone lines to keep water out.hackaday.comexternal-linkmessage-square11fedilinkarrow-up1146arrow-down12
arrow-up1144arrow-down1external-linkTIL some cities (like NYC) pump nitrogen into their phone lines to keep water out.hackaday.comShadow to Today I learned@lemmy.ml • 1 year agomessage-square11fedilink
minus-squareDumbAceDragonlinkfedilinkEnglish2•1 year agoI would always see those canisters around the city and wondered what they were. TIL.
I would always see those canisters around the city and wondered what they were. TIL.