Astrophysicist Richard Gaitskell, from Brown University, leads a team hunting particles of dark matter about a mile beneath Earth's surface. No luck so far, but Gaitskell is still hopeful. Chet Brokaw/AP hide caption

toggle caption
Chet Brokaw/AP

A Physicist Dreams Of Catching Dark Matter In The Act

  • Download
  • <iframe src="" width="100%" height="290" frameborder="0" scrolling="no" title="NPR embedded audio player">
  • Transcript