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PhysicsAttractive atoms pick up repulsive habits
Rubidium atoms intrinsically attract each other, but new experiments near absolute zero have induced the atoms to repel each another instead.
By Peter Weiss -
EarthWildfires spread across a parched West
Dozens of lightning-sparked wildfires seared the western United States last week, adding hundreds of thousands of acres of charred terrain to a tally that promises to make this fire season the worst in recent decades.
By Sid Perkins -
Ibuprofen cuts Alzheimer protein build-up
The common nonprescription drug ibuprofen may lessen abnormal accumulation of beta-amyloid in the brain, perhaps explaining how the drug decreases the risk of developing Alzheimer's disease.
By John Travis -
Cleft-lip mutations may hinder virus
Having identified the mutated gene responsible for a syndrome involving cleft lip or palate, a research team finds that the recessive mutation also may confer an antiviral advantage to people who carry one copy of this gene.