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How a Space Station Makes Its Own Oxygen - Neatorama

Have you ever wondered how the International Space Station gets enough oxygen to keep its crews breathing? It's not shipped in, at least not often. The same goes for water, although humans use a lot of oxygen and water every day. The floating laboratory is equipped with hi-tech appliances for renewing its own supplies. Water is recycled into fresh water, and some of it is used to make new oxygen. Humans also expel a lot of carbon dioxide, which is not expelled from the station, but is converted