News

  1. Astronomy

    Variable 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.

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  2. 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.

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  3. 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.

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  4. Health & Medicine

    Gene therapy might keep arteries open

    Tiny steel-mesh tubes coated with a DNA-containing polymer could prevent arteries from becoming reclogged after cardiovascular treatment.