News

  1. Health & Medicine

    New cholesterol guidelines advise more treatment

    Citing results from five recent trials of anticholesterol statin drugs, U.S. health officials recommend that physicians use the drugs to treat many more patients with high cholesterol.

    By Ben Harder
  2. Paleontology

    Chipmunks in Wisconsin toughed out ice age

    Analyses of DNA from chipmunks in parts of the U.S. Midwest hint that some populations of the creatures stayed in northern refuges rather than migrating south at the beginning of the last ice age.

    By Sid Perkins
  3. Animals

    A first for mammals: Tropical hibernating

    The fat-tailed lemur, the first tropical mammal documented to hibernate, exploits local heat spikes to save energy during the long snooze.