News
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AstronomyVariable quasar may help measure the cosmos
A flickering cosmic mirage, recorded for the first time in X rays, promises to provide a new estimate of how rapidly the universe is expanding.
By Ron Cowen -
Wild tobacco heeds ‘ouch’ from sagebrush
Biologists studying wild tobacco and sagebrush say they have found a case of interspecies plant communication in the field.
By Science News -
Untreated schizophrenia may spare brain
Contrary to the fears of some researchers, treatment delays for schizophrenia may not worsen brain deficits associated with the mental disorder.
By Bruce Bower -
Health & MedicineGene therapy might keep arteries open
Tiny steel-mesh tubes coated with a DNA-containing polymer could prevent arteries from becoming reclogged after cardiovascular treatment.