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  1. Health & Medicine

    Hepatitis B vaccine linked to MS

    People who develop multiple sclerosis are more likely than others to have received a hepatitis B vaccination in recent years.

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  2. Materials Science

    Heat-controlled implant delivers insulin on demand

    The field of drug delivery is literally heating up, with the development of a new polymer implant that releases insulin in response to changes in temperature.

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  3. 19460

    Astronomers and physicists seem to speak of black holes as though they took matter completely out of the universe. An evaporating black hole would not fizz away into nothingness. It would lose energy and reappear in normal space as a very dense object (complete with information).