If you already know and love the northern lights, or if you're simply curious about these eerie but exquisite dancing curtains in the sky, then this is the videotape you want. The Aurora Explained tells what northern lights are, how they work, and why and when they appear where they do. Though accurate and based on current knowledge, the narration is nontechnical, suitable for anyone from sixth-graders to science graduates. And the aurora provides its own illustrations, in brilliant scene after scene of stunning arcs and colorful curtains, vivid folds and ghostly flickers. This is aurora as it usually can be seen only under the best viewing conditions, in the frigid chill of subarctic night, but now available for viewing in the warmth and comfort of homes everywhere.