50 Years Ago

  1. Animals

    50 years ago, scientists made the case for a landlubbing Brontosaurus

    In 1971, a scientist argued for a landbound Brontosaurus instead of a swampy swimmer. Recent evidence comes from studies of its ancient environment.

    By Bethany Brookshire
  2. Physics

    50 years ago, scientists poked holes in the existence of polywater

    In 1971, scientists were casting doubt on an anomalous form of water. Fifty years later, water’s odd properties are still mysterious.

    By Erin Garcia de Jesús
  3. Health & Medicine

    50 years ago, urea showed promise as a sickle-cell treatment

    In 1970, scientists found the first treatment for sickle-cell disease. 50 years later, they’re trying to cure it with CRISPR.