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Comment by Koshkin | Hacker News Reader
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Koshkin
·
U-238 must be pretty safe, given its long half-life?
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russianGuy83829
·
Didn't know they had so many Ubahn lines in Berlin, though it went from U1 to U9 ;)
mpetrovich
·
No, he’s talking about the movie. You know, the one with the sub.
hef19898
·
Because I felt like it:
https://en.m.wikipedia.org/wiki/German_submarine_U-239
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