Motion and Stability: Forces and Interactions

  1. Earth

    Tsunami’s trek traced in the sky

    Scientists photograph atmospheric ripples that followed the March tsunami across the Pacific.

    By Stephen Ornes
  2. Physics

    Like electricity, but magnetic

    Getting magnetic poles on the move makes a new kind of flow.

    By Stephen Ornes
  3. Tech

    Crime lab

    From accidents to crime scenes, scientists are helping detectives solve mysteries.

    By Emily Sohn