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The British Royal Navy has confirmed that one of its subs was damaged after hitting ice while on patrol, although that may not be the whole story.

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Did you know that GPS doesn't work underwater? Neither did we. But apparently it's a big enough problem that the United Kingdom's Ministry of Defense is working on a futuristic solution that will allow more precise navigation by the Royal Navy's submarines and surface ships, while eventually trickling down to consumer-grade mobile devices. That all sounds great, but its abilities aren't anywhere near as cool as its name – the quantum compass.

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