Images of the Atapuerca Caves, the cave paintings at Altamira, and a Neanderthal skull found at Forbes' Quarry on Gibraltar serve to introduce kids to prehistoric sites in Spain. Designed to support a study of prehistoric Spain, the...

Discusses the design of a meter for measuring the power output from a set of seawater batteries.

ArtCyclopedia's complete list of silversmiths from the 18th and 19th centuries. There are links to the artists' biography and works.

This article gives a good overview of the topic of captive animal enrichment -- keeping captive animals healthy and thriving. Good for those interested in animal welfare, animal keeping occupations, or a general interest in the whole...