Uncategorized

  1. Space

    Safe from black holes

    The Large Hadron Collider could generate black holes, but they would be too tiny and short-lived to do any harm and would be no more malevolent than the cosmic rays constantly bombarding Earth, two new reports find.

    By Ron Cowen
  2. Health & Medicine

    Heel test

    A simple, inexpensive ultrasound test of the heel might reveal whether a person is at risk of osteoporosis and should get more extensive tests.

    By Nathan Seppa
  3. Life

    Nearly immortal sea creature spreads

    Hydrozoan with reversible life cycle now found worldwide.

    By Susan Milius
  4. Health & Medicine

    Curative leaf

    Compound in marijuana reduces inflammation without the psychological effects.