Review America's history with over 700 individual maps that address a broad range of issues with this atlas. This atlas maps a variety of historical topics: "exploration and settlement of the continent, the location of colleges and...

You will find a series of calculators here for exploring what your carbon footprint on the Earth is, based on your use of air travel, your regular means of transportation, your household habits, and fixed carbon dioxide emissions for the...

Using concept sketches, students study energy requirements of food production explain why different sources of food require different inputs of energy. They also investigate how variables like farming methods, processing methods and...

Discusses the cotton economy in the Lower and Upper South of Texas in the 1800s, and the role transportation played in its growth, or lack thereof in some regions. Wheat was more widely grown in the Upper South where the yeomen farmed.

Describes the formation of rivers and the transport of soil and sediment. Links to related material is provided within the text.

Two thousand years before today's "global economy," an exchange network linked the continent of Asia via the Silk Route. Between the first and eighth centuries of the common era, the empires and states of Asia often came into conflict as...

A short history of the Industrial Revolution, the reasons that it began in England, some of the significant inventions that had a major impact, changes in transportation, the rise of labor unions, its spread to the United States, and the...

In the final essay of a four-part series, David Christian explains how advances in communication and transportation accelerated collective learning.

Innovations in transportation, communication, and weapons transformed the world in the 20th century. The modern era is the most complex yet, and the most fragile. This photo gallery highlights some of these innovations.

Students learn about traffic lights and their importance in maintaining public safety and order. Using a Parallax Basic Stamp 2 microcontroller, students work in teams on the engineering challenge to build a traffic light with a specific...

Which type of vehicle do you dream of driving? The book includes audio narration in 17 additional languages with text in English.

A book about trains, planes, and boats, and the difference between those that carry people and those that carry cargo. Includes audio narration in eight additional languages with text in English.

This is a brief history of a railway that was envisioned to be a "trans-prairie " railway and was planned to serve the settlers in the Red Deer area. Included are maps, and primary source documents.

This history of the Canadian National Railways (CNR) describes its formation in 1918 as the Government of Canada merged the assets of the Canadian Northern Railway with those of the Canadian Government Railway and later the Grand Trunk...

A thorough look at Mongolia from the Country Studies section of the Library of Congress. Read about its history, economy, people, and government. Information through the 1990's.

Young scholars will explore weathering and erosion, what causes them, and the difference between them. They will be able to find evidence of weathering and erosion in the environment around them.

If you're doing a research paper on Ecuador, this is a great place to begin. Has information about the history, people, geography, climate, economy, and more. Click on the map image to get more details and an enlarged view.

Teachers will find detailed lesson plans covering varying aspects of railroad safety. Connections to curriculum subject standards, such as physics, are provided. Various data and activity sheets, as well as grading rubrics, can be easily...

Cobras.org provides 18 pages of cobra information ranging from cobra anatomy, enemies, and feeding habits, to resources, scientific classifications, and cobra bite first-aid.

Easy to read description of Golgi apparatus with a color drawing.

A good overview of the policies of the Republican administrations in the 1920s that promoted favorable conditions for U.S. industry. Read about how these policies were a disaster for the farm economy.

A close up picture providing an example of what a slave chain looks like. Click on Teacher's Guide for teacher resources.

[Free Registration/Login may be required to access all resource tools.] Discusses how flowing water causes erosion; describes how runoff, streams, and rivers change Earth's surface; and identifies features caused by groundwater erosion.

[Free Registration/Login may be required to access all resource tools.] Discusses how waves cause erosion of shorelines, features formed by wave deposition, and ways to protect shorelines from wave erosion.