News

  1. Life

    Gene-edited stem cells help geckos regrow more perfect tails

    Regenerated gecko tails are a far cry from perfect. Now experiments have coaxed geckos to regrow better ones with nerve tissue and bonelike cartilage.

    By Freda Kreier
  2. Health & Medicine

    What parents need to know about Pfizer’s COVID-19 vaccine for kids ages 5 to 11

    Federal health officials authorized the Pfizer vaccine for this age group on October 29.

    By Aimee Cunningham and Erin Garcia de Jesús
  3. Math

    An elusive equation describing bird eggs of all shapes has been found at last

    A new mathematical equation describes bird eggs of all shapes found in nature, and it could have applications in food and agricultural research.