Tungsten. bullets. co-evolution. http://news.
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Imagine a lump of iron the size of a tennis ball. Weigh it in your hand. Now let it drop on to your foot. How does that feel? Now imagine an identical object three times as dense. How would that feel if you dropped it? Would you ever walk again?
That metal is tungsten.
As well as being incredibly dense it is also incredibly hard and has the highest melting point of all the elements - 3,422C.
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