Magnetism is a force that causes like-charged objects to repel, and opposite-charged objects to attract. As such, it has always been a subject of fascination to scientists. As one of the fundamental universal forces, it exists in everything from asteroids to bacteria. This edition of Show Me Science describes what magnetic fields are and how they are created. The program also explains the Northern Lights and compares the Earth's magnetosphere to that of the sun.

Originally released by TMW Media Group, 2008. Streaming video file encoded with permission for digital streaming by Infobase on May 08, 2015.

Magnetism: Fundamental Universal Force (1:34); --Magnetic Force Field (3:46); -- Uses of Magnetism (2:39); -- Earth's Magnetic Field (3:39); -- Magnetism in Living and Non-Living Things (3:21); -- Magnetic force (5:23);.