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30British military developing GPS navigation that works without satellites

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.

AddHow about never refilling your tank for 25 years?

First I am going to pose a question, then, I am going to make a statement. Here goes: Is nuclear power good or bad? In this particular example, a new submarine for the British Royal Navy is powered by its very own nuclear reactor, and said nuclear reactor will power the machine for its entire expected 25-year lifespan. While the idea of never needing to refill a gas tank or recharge batteries sounds great, the question is whether nuclear power is a good option. Like I said earlier, this example

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