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EarthDeep Pacific waters warmed in recent years
Oceanographic data gathered across the North Pacific in 1985 and again in 1999 indicate that the deepest waters there have been heating up.
By Sid Perkins -
ChemistryNew champions among corrosive microbes
Newly discovered strains of bacteria have developed a metabolic shortcut for eating away iron with great efficiency.
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Materials ScienceCinching nanotubes into tough fibers
Irradiating bundles of carbon nanotubes can lead to tougher fibers.
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PhysicsRadioactive sprinkles keep machines true
Needing tiny radioactive sources to calibrate medical scanners with ever-sharper vision, an Australian team dipped tiny balls the size of candy sprinkles into a radioactive liquid.