Mystery Solved

  1. Paleontology

    A tiny mystery dinosaur from New Mexico is officially T. rex’s cousin

    A newly identified dinosaur species called Suskityrannus hazelae fills a gap in tyrannosaur lineage.

    By Maria Temming
  2. Physics

    Here’s what causes the aurora-like glow known as STEVE

    Amateur astronomer images and satellite data are revealing what causes the strange atmospheric glow called STEVE.

    By Maria Temming
  3. Physics

    Microwaved grapes make fireballs, and scientists now know why

    Electromagnetic waves bounce back and forth inside a grape, creating plasma.

    By Emily Conover
  4. Animals

    Wombats are the only animals whose poop is a cube. Here’s how they do it.