Explain how a fluoride atom can change into a fluoride ion.

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That could all change, however, now ION has muscled into the scene with its Air Pro HD sports camera.

ENGADGET: ION Air Pro POV camera: shoot on the piste, upload to the cloud, we go hands-on (video)

And if Sadoway is right, the two ways to make sure it does not happen again are to change the design of the lithium-ion battery or replace it with a safer, but less-powerful battery technology.

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