Notebook

  1. Animals

    This glass frog wears its heart for all to see

    A newly discovered glass frog species has skin so clear that it reveals most of the animal’s internal organs, including the heart.

    By Cassie Martin
  2. Physics

    Here’s why your wheelie suitcase wobbles

    Physicists explain why roller suitcases rock back and forth as you dash through the terminal.

    By Maria Temming
  3. Health & Medicine

    In 1967, researchers saw the light in jaundice treatment

    Researchers discovered how to use light to treat babies with jaundice 50 years ago. But questions remain about the technique’s effectiveness in some cases.

    By Cassie Martin
  4. Life

    Ladybugs fold their wings like origami masters

    Ladybug wings could lead to new foldable technologies.