TIL that Submarines and Space Stations burn special candles as a means to produce oxygen, which can be used as a backup if their electronic oxygen-producing systems fail.
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Posts › kONQd
› 3 days ago
TIL that Submarines and Space Stations burn special candles as a means to produce oxygen, which can be used as a backup if their electronic oxygen-producing systems fail.
Read more from wikipedia.org
via reddit.com