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  1. 19203

    Many people who are exploring the possible connection between childhood vaccines and autism claim that the culprit is not the vaccines themselves, but the mercury-containing preservative thimerosal. Does the Danish MMR vaccine contain it? Anne SealsSumner, Wash. Thimerosal has never been used in the MMR vaccine, either in the United States or in Denmark .–B. […]

    By Science News
  2. Health & Medicine

    Study exonerates childhood vaccine

    A nationwide study in Denmark provides strong evidence that a childhood vaccine once blamed for some cases of autism plays no role in the development of that neurological disorder.

    By Ben Harder
  3. Astronomy

    Galactic cannibalism strikes again

    Astronomers have discovered the remains of a tiny galaxy that was swallowed by the galaxy Centaurus A only a few hundred million years ago.