Our oceans are composed of many complex relationships. Young oceanographers explore relationships between organisms, understand the world ocean's currents, and discover the effects of water pollution and how it behaves. There are...

Learn about the art of the people of Pacific ocean Melanesia area in this historical overview and image gallery of Melanesian art with detailed descriptions, from the collection of the British Museum.

To commemorate the bicentennials of the Louisiana Purchase and the Lewis and Clark expedition, the U.S. Mint modified the nickel to reflect these national milestones. This page has images of the 2005 obverse design of President Jefferson...