The Oral Cancer Information Center talks about how smoking will put someone at greater risk for oral cancer.

This article provides information on smokeless tobacco, and provides several tips on how to stop. Here, you can read responses to brief questions about smokeless tobacco, it dangers, and the difficulties of quitting using it. Learn how...

The Encyclopedia of Life presents this in-depth overview of Tobacco (Nicotiana tabacum), including their habitats, size, conservation status, and much more. Images of this species and maps of its global distribution can also be found here.

This interactive module will help you understand the basic anatomy and physiology of the respiratory organs, primarily the lungs. You will learn about lung development, respiratory toxicology, secondhand tobacco smoke, asthma, and lung...

This website explains why Virginia needed laborers, why it led to the use of African labor and how it was justified by Christians. Hyperlinks to related topics on the site.

Here is a gold mine of information about advertising from 1867 to 1918 in the western part of the United States, particularly the Pacific Northwest. This collection of 450 ads shows social, cultural, and economic trends during this time...

A great description and explanation of the exchange that took place between the Old World and New World as a result of European exploration. Find examples of plants, animals, and diseases that were traded as a result of exploration and...

Learn why people smoke and about the effects of smoking.

[Free Registration/Login may be required to access all resource tools.] Describes the discovery of viruses and two hypotheses for the origin of viruses.

Use these practice questions on drug abuse and addiction to review for the NCLEX-RN test.

Home page for the Agricultural Marketing Service of the USDA, links to product and commodity marketing information and job opportunities.

A map from 1904 of Missouri showing the capital of Jefferson City, major cities and towns, railroads, and rivers. An inset map details St. Louis. "Missouri - Organized as a Territory in 1812; admitted to the statehood in 1821. Its lead...

This site discusses, through a series of questions and answers, the benefits of smoking cessation. Also provides links to definitions of many of the terms used throughout the site.