Uncategorized

  1. Health & Medicine

    Nicotine metabolism shows ethnic bias

    A comparison of Latino, white, and Chinese-American smokers suggests that people of East Asian descent are apt to clear nicotine from their blood more gradually than the other smokers do, thereby staving off a craving for the next cigarette.

    By Nathan Seppa
  2. Materials Science

    Mammal cells make fake spider silk better

    Using long and abundant water-soluble proteins secreted by bioengineered mammal cells, scientists have spun the first artificial spider silk demonstrated to have some of the remarkable mechanical properties of the real thing.

    By Peter Weiss

  3. Much psychosis in elderly may go unnoticed

    Swedish researchers identified hallucinations and other psychotic symptoms in 10 percent of a sample of 85-year-olds, a much larger figure than previously reported for elderly people.