An actual interactive copy of the original Tennessee Valley Authority Act that created cheap power in the Tennessee Valley. Links to larger images, a typed transcript, and a downloadable .PDF file are included on this site. Make sure to...

This is a great site where you can explore the Amazon Rain Forest. Learn about the river, plants, animals, and more. Based on the PBS television series.

Detailed nformation about the Northwestern Shoshone Indians from Utah. Provides in-depth details about their lifestyle and historical facts about the Bear River Massacre and Washakie Farm.

Read about the discoveries of the Spirit Lake Man and Wizard's Beach Man.

Find Native American tribes grouped by geographic location as well as relevant information and pictures.

Excavated findings along the Silk Road in the Middle and Far East are found in this online museum exhibition.

The following learning module is an exploration of plate tectonics.

One of the last remaining high-desert ecosystems in North America, this resource presents an overview of the Red Desert in southern Wyoming offering its geographic features, local wildlife, and the threats to the lands.

The AACCLA promotes trade and investment between the United States and Latin America. Country-specific information and general NAFTA information are provided.

This site contains facts about the U.S. grasslands, including history, laws, and regulations. To learn more about specific grasslands, select a grassland by region or by state.

The U.S. Geological Survey reports on the latest news affecting the earth today, as well as providing a wealth of data, reports, and information.

Enjoy this award-winning site from Yellowstone Park, the Crossroads of the West. Plan your trip with their free "99 Things To Do in Yellowstone." Be sure to watch the movie "Yellowstone Park" for great sites and music!

If you are interested at all in rainforests, this is an excellent place to further your learning. Read about the importance of rainforests, why they are disappearing, and plenty about both the animals and people who live in rainforests...

Provides links to pages discussing the history of the Southern Ute. Includes the following links: an introduction to the history of the Utes, chronology of Ute history, information on historical Ute leaders, maps of Ute territory, and...

Provides a thorough look at California's Mono Lake, including geological history and biological characteristics.

This resource page contains an exhaustive list of pictures and videos of sea floor structures found all over the world.

The Western Indian tribes hit the lottery with the abundant natural resources in their area. The tribes that called this area home had diverse cultures depending on the geography of their specific location. Delve into these cultures and...

The Baka are a semi-nomadic forest people who live in the republic of Cameroon in central Africa. In this video from Africa, the Baka men meet with a government official for help to protect their forest.

Loggers steal trees from the rainforest of Cameroon, one of Earth's oldest living ecosystems, in this video segment from Africa.

A comprehensive article honing in on concerns for federal wilderness protection by learning from indigenous peoples, specifically the Eastern Shoshone and Northern Arapaho Indians in Fort Washakie, Wyoming.

In a lesson in this issue of Smithsonian in Your Classroom, students do the work of a team of paleontologists studying a time of rising carbon dioxide and rapid global warming during the Eocene epoch. By examining fossils of tree leaves,...

Investigate some of the mathematical challenges Boston engineers had to deal with during the Central Artery Tunnel Project (the "Big Dig"). This video focuses on the irregular shape of the casting basin and the volume calculations...

At this Wikipedia site you can read about chronology, geography and history of the Harappan civilisation in the Indus River Basin.

Students examine available data of water in the Colorado River Basin, study the possible consequences of changes to various user groups, and suggest solutions to adapt to these changes.