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EarthNorthern Vents: Arctic shows surprising hydrothermal activity
A recent survey along a midocean ridge beneath the Arctic icepack unveiled an unexpected abundance of hydrothermal activity.
By Sid Perkins -
Health & MedicineNifty Spittle: Compound in bat saliva may aid stroke patients
An anticlotting molecule in the saliva of vampire bats combats strokelike brain damage in mice.
By Nathan Seppa -
Materials ScienceQuick-Change Surface: Material repels water on command
Researchers have modified a gold surface so that it switches from a water-attracting mode to a water-repelling one on command.
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Testosterone’s Family Ties: Hormone-linked problems reflect parent-child bond
Low or high concentrations of the hormone testosterone may contribute to delinquency and depression mainly in children who have poor relationships with their parents.