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PhysicsMaybe this watched pot already boiled
Researchers smashing nuclei in hopes of producing a primordial state of matter called the quark-gluon plasma may have already made the stuff without realizing it.
By Peter Weiss -
Health & MedicineDeath of a theory
Three separate analyses of oral polio vaccine used in the 1950s in Africa deflate the theory that such a vaccine could have ignited the AIDS epidemic by containing virus-infected chimpanzee cells.
By Nathan Seppa -
Health & MedicineGene therapy cures blindness in dogs
Gene therapy to replace a defective RPE65 gene succeeds in bringing sight to three blind dogs, suggesting such therapy might reverse Leber congenital amauosis, a rare condition in which children are blind from birth.