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  1. Life

    Prions complicit in Alzheimer’s disease

    A study in mice suggests a version of prion proteins, which are known to cause the brain-wasting mad cow and Creutzfeldt-Jakob diseases, may also play a role in neuron malfunction.

    By Laura Sanders
  2. Life

    New stegosaur is quite a stretch

    A newly discovered stegosaur has neck proportions like those of sauropods.

    By Sid Perkins
  3. Animals

    Climate change discourages second families

    Birds out of sync with local baby food supply of caterpillars aren’t nesting a second time.

    By Susan Milius
  4. Life

    Tastes like metal

    Scientists have discovered that proteins that help sense sweet and spice also help taste metals.