The Nazis built a secret weather station way up in Canada, out of a U-boat, and it stayed there until 1981. The batteries died after a few days, though. More i

The Nazis built a secret weather station way up in Canada, out of a U-boat, and it stayed there until 1981. The batteries died after a few days, though. More info: https://en.wikipedia.org/wiki/North_Atlantic_weather_war https://en.wikipedia.org/wiki/North_Atlantic_weather_war