"My hands became stuck like this, " he told me, tensing up his digits into a wooden, claw-like shape.

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Researchers believe its short arms and large claw show how bird-like dinosaurs evolved independently of birds.

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The hands are not waterproof, which is one reason Koger says he'll still keep his other prosthetics, like his metal claw, available.

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This is a room full of folks who come from immigrants, and remember what it was like to scratch and claw and work.

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"It's like a big, metal, claw-y machine in 'Transformers, '" she said, to much laughter, during a lunchtime gathering at Google's Manhattan offices.

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When suicides are dredged from the Seine, it is said, the lovers and the debtors are easy to tell apart: the lovers have paint under their nails, from trying to claw their way back on to the bridge at the last moment, whereas the debtors sink like stones.

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