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Health & MedicineMexican Americans face stroke risk
Middle-aged Mexican Americans face twice the stroke risk that non-Hispanic whites do.
By Nathan Seppa -
TechHelping circuits get enough oxygen
The search for new insulators needed for making ever-smaller circuits may get a boost from a new electron microscopy technique sensitive to a single oxygen atom missing from a crystal layer.
By Peter Weiss -
Health & MedicineVitamin E may curb colds in old folks
Vitamin E seems to help elderly people fend off colds.
By Nathan Seppa -
TechSound power for deep-space travel beyond sun’s reach
An unusually efficient new type of power unit for spacecraft uses sound to convert heat to electricity.