Shadow@lemmy.ca to Today I learned@lemmy.ml · 8 months agoTIL some cities (like NYC) pump nitrogen into their phone lines to keep water out.hackaday.comexternal-linkmessage-square7fedilinkarrow-up1143arrow-down12
arrow-up1141arrow-down1external-linkTIL some cities (like NYC) pump nitrogen into their phone lines to keep water out.hackaday.comShadow@lemmy.ca to Today I learned@lemmy.ml · 8 months agomessage-square7fedilink
minus-squareDumbAceDragonlinkfedilinkEnglisharrow-up2·8 months 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.