While Alfred Thayer Mahan may have been obsessed with the role of naval power in warfare, the 20th century saw the rise of air and space power in a way that might have surprised even Mahan himself. Persons with an...

This educational and research facility is a partnership of the Alaska Maritime National Wildlife Refuge (the world's largest seabird refuge) and Kachemak Bay Research Reserve (a dynamic estuary). It features interactive...

One name looms large for the general public when the word "evolution" is mentioned: Charles Darwin. Of course, others are quite aware that Alfred Russel Wallace co-discovered the theory of evolution with Darwin, a fact...

Explore this virtual museum exhibit on Arctic cultures from the Smithsonian Institution. Lessons for every discipline including anthropology, archeology, biology. Downloadable publications include the center's...

Known around the world for its fine radio and television documentaries, the BBC has selected a number of audio and video clips from some of the more recent programs and placed them on this site for the Web-browsing...