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- Two days in an underwater cave running out of oxygen http://www.bbc.com/news/magazine-40558067 299 comments
- How do pockets of breathable air form in deep underwater caves? https://www.bbc.com/news/magazine-40558067 17 comments askscience
- Two days in an underwater cave without oxygen http://www.bbc.com/news/magazine-40558067 20 comments worldnews
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