A comprehensive site from the Internet Encyclopedia of Philosophy on Sigmund Freud and his psychoanalysis theory. Discusses his reasoning for thinking the way he did, his theories behind psychoanalysis and the unconscious, and the site...

The very name of William Quantrill and his raiders struck fear into the people of Kansas, but it turns out he was hated by both Union and Confederate because of his bloodthirsty ways. Read this article from the Encyclopedia of Oklahoma...

Detailed encyclopedia entry describing the history of literature in Alabama and how its writers have contributed to both American and world literature.

Detailed encyclopedia entry describing the economic, political, and social problems Alabama endured during World War I.

The Encyclopedia of Alabama offers a biographical profile of football legend, Joe Namath.

Understand the characteristics and features of Earth's core from this detailed article. Includes high-quality illustrations, a downloadable poster, a video, and links to other resources.

An interesting look at how some businesses in Chicago practiced welfare capitalism, a way to give noncash compensation to workers primarily to stave off unionization, but also to promote a loyalty to the company. Many examples are given.

This excerpt is from encyclopedia entry and contains fact's about Spain's economy.

Explains what genetic mutation is, results of mutation, types, how scientists use it in research and in medicine, what it looks like at the molecular level, chemicals that can cause mutation, and frequency of occurrence. (Published:...

Article describing the scope of the problem of overfishing in the ocean and in fresh water bodies around the world. Adverse effects of this practice on both natural and human systems, and efforts to contain it are detailed. (Published:...

Article explaining what organisms are, their cellular foundation, and how they get their energy and nutrition. (Published: May 26, 2010)

Information about the orangutan: its scientific classification, physical features, reproduction, behavior, diet, habitat, threats to its survival, and efforts being taken to protect it. (Published: August 7, 2010)

The complete original text of On the Origin of Species by Charles Darwin.

A collection of articles on the Deepwater Horizon oil spill that happened on April 20, 2010. It was caused by an offshore explosion on an oil platform fifty miles southeast of the Mississippi River delta.

A collection of articles on offshore oil. Some of the topics covered include the Deepwater Horizon oil spill, oil exploration and oil reserves, oil drilling, and the history of oil and gas.

Detailed information about oak trees: their taxonomy, evolution, habitats, morphology, significant oak forests around the world, and a list of species that are endangered. (Published: December 22, 2010)

Explains what noise pollution is, sources, the effects of noise propagation, the impact on health and on human and animal behaviors, strategies for reducing the effects of noise, and standards in place for regulating noise pollution....

Article explaining what the nitrogen cycle is, and its role in an ecosystem. (Published: June 28, 2010)

Information about the element, Nitrogen, atomic number 14. Covers common chemical transformations, its physical properties, atomic properties, how abundant it is on the Earth, and details about health-related regulations. Also discusses...

Discusses the chemistry of nitrate, the negative agricultural effects of too much nitrate in soil and in water sources, its toxicity to plants and livestock, and the impact on human health.

Explains what nickel is, ways it is used, how it is produced, how it gets into the environment and into our bodies, and the health effects of exposure to nickel. Also discusses how to reduce the risk of exposure. Has links to additional...

Scientific article explaining what natural selection is, and how it manifests itself through genetics and from generation to generation. Natural selection is compared to genetic drift, both of which cause evolution to occur. The limits...

An extensive collection of articles which discuss the policy and management of Earth's natural resources.

Explains what natural gas is, how it is formed, its composition, measurement terminology, how companies locate and extract it, processing, how it is transported and stored, uses, and safety considerations. (Published: September 20, 2011)