How do inhabitants on islands alter the ecosystem over time? An archaeologist will identify specific changes over many years that occurred as a result of human arrival on islands. [29:16]
The Smithsonian's EdGate project provides this illustrated narrative site that explores the mapping of the American West accomplished by the 1804-06 Lewis and Clark expedition.
Investigate how important parasites are and how they relate to their hosts through this webcast with Dr. Anna Phillips, a zoologist. [30:52]
Dinosaurs were not the only life to go extinct and leave a trail to their history. This webcast presents a paleobotanist who has studied extinction at a site in North Dakota. He discusses mass extinction. [29:16]
Dr. Michael Wise explains the incredible qualities of rocks called pegmatites, and our dependence on them for minerals. Wise is a geologist at the National Museum of Natural History. [29:19]
Understand how microbes transform minerals in this webcast. How can microbes possibly help curb pollution? [29:16]
How can modern science help unravel the history of mummies? Compare human-made mummies with naturally made mummies. [29:16]
This site takes a very brief look at the muskox as an arctic creature. Several photographs are also provided.
A zoologist discusses her research looking for new invertebrates in the seas. She also gets to name the new creatures! [29:16]
The Ocean Planet exhibit at the Smithsonian explains the general features of ocean circulation. A general look at upwelling, deep water, and currents are combined for an overall view.
Detailed website that was a companion to a 1995 traveling exhibit of the Smithsonian. Links to lesson plans and other educational materials are at the bottom of the page. Enter the exhibition to explore the world of the ocean.
An explanation of radiometric or absolute dating of geological formations based on using the half-life of radioactive elements to figure out how old given rock layers are. A link on the left provides information about relative dating as well.
A webcast features a paleontologist who presents the data that can be collected by fossil whales. [29:15]
A webcast features a paleobotanist who has studied the climate record through fossilized leaves and other remnants of history. [29:15]
The Smithsonian National Museum of Natural History, in a section titled "North American Mammals," offers a general overview of the red wolf. Content includes a focus on this animal's conservation status, habitat and range, and other key facts.
The Secret in the Cellar is an interactive web comic based on the real finding of a body from the 17th century in the Chesapeake Bay area. Using historical and archaeological clues, students are guided to discover the truth about how this person lived and died. The whole comic, the activities, and the articles can be printed for off-line perusal.
A webcast examines the history of the cellphone and the revolution they've created in communication. [29:16]
This interactive site explores Viking history. It shares who the Vikings were, their archaeology, and literature. Students can use their mouse to travel Viking routes and learn about places the Vikings went. Also, students can listen to shipbuilding advice.
Geologist Dr. Elizabeth Cottrell, describes why she considers volcanoes "lungs of the earth" in this webcast. [29:15]
A webcast presents a way to dig deeper into the ecosystems from dinosaur eras based on data gathered from small fossils versus what big dinosaur bones may reveal. [36:40]