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TechReaction in Hand: Microreactor produces radioactive probe in a jiffy
A miniature chemical reactor that whips up a diagnostic tool could widen the availability of positron-emission tomography (PET) scans.
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Shades of Flesh Tone: Tests reveal gene for people’s skin color
Researchers have identified a gene that they propose plays a major role in determining a person's skin color.
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EarthTB Dilemma: Badger refugees complicate culling
Two new analyses bring an ironic twist to the heated debate over whether badgers in Britain should be killed to prevent them from spreading tuberculosis among cattle.
By Susan Milius -
EarthGlacial Change: Greenland’s ice loss doubled in 2005
A host of observations suggests that Greenland's ice sheet diminished this year at a rate more than twice that seen just a few years ago.