This encyclopedia article describes how the credit card system works. It discusses the history, how credit cards are used, features, types, the numbering system, pros and cons, and more.

This encyclopedia entry provides extensive information on the Western European country, Portugal.

A thorough encyclopedia entry on Maximilien Robespierre. Discusses his childhood and early life, his revolutionist actions, his involvement with the Jacobins, the establishment of and information about the Committee of Public Safety, and...

This encyclopedia entry provides a good overview of the North Atlantic Treaty Organization. Content includes a look at member states, military operations, a list of the Secretaries General and Deputy Secretaries General, and a history of...

An easy-to-read entry on Buddhism, from open-source encyclopedia Wikipedia, that answers basic questions about the religion and its practices. Explains the Buddhist belief system and what the word "Buddha" means. Also discusses Buddhist...

This site from the encyclopedia Wikipedia provides an article on Eridu, an ancient Mesopotamian city in Sumer, thought by some to be older than any other city in the world.

Wikipedia is a free-content encyclopedia, written collaboratively by people from around the world. The site is a wiki, which means that anyone can edit articles simply by clicking on the "edit this page" link. You may read and edit...

This encyclopedia article from Wikipedia details how the term "arts and crafts" came into existence and lists a wealth of links to other encyclopedia articles on different types of arts and crafts. Links are provided for additional...

Wikipedia, an open-source encyclopedia, offers a general overview of the taiga biome. A long list of taiga eco-regions can be found, each linking to its own encyclopedia entry.

This Wikipedia online encyclopedia site offers a brief biography of Eli Whitney (1765-1825 CE), inventor of the cotton gin and many other things. The encyclopedia entry provides many hyperlinks to terms as well as an illustration of...

This collaboratively written encyclopedia article covers just the basic facts of Maugham's life and includes a brief bibliography of some of his work.

Free-content encyclopedia entry for Nicholas Hillard from Wikipedia.

An in-depth look at minstrel shows is found in this encyclopedia article from Wikipedia. The site discusses the origins and rise in popularity during the Civil War, how the shows were structured in three different parts, typical stock...

A concise encyclopedia article from Wikipedia on magical realism gives information on the origins of the term, its characteristics, and compares it to conventional fictional realism. Links are provided for additional information.

This encyclopedia article from Wikipedia gives a brief overview of the country of Panama, with links to further information. Content covered in the article includes information on Panama's history, politics, geography, economy, and...

This page from the Wikipedia encyclopedia on amorphous solids contains information on examples of, the difference between amorphous solids and crystalline solid, and the transition between a very viscous liquid and an amorphous solid.

This encyclopedia article from Wikipedia on latitude tells what it is, lists some latitudes of particular importance, and tendencies that latitudes can determine. Links are provided throughout for additional information.

This site from the Wikipedia Encyclopedia provides a basic description of the characteristics of the hagfish. Also includes a chart that contains scientific classification information. Links are provided throughout for additional...

This site, which is provided for by Wikipedia, gives a brief encyclopedia article on what beta decay is.

This encyclopedia article from Wikipedia describes the physical makeup of the larynx and the different functions of these parts.

This encyclopedia article from Wikipedia provides a general overview of the gemstone topaz. Liinks are provided for additional information on related subjects.

This encyclopedia article from Wikipedia over endocytosis discusses the three forms in which it can take place. Links are provided for additional information on this subject as well as related subjects.

This encyclopedia entry from Wikipedia about tragedies discusses its Greek origins; the typical characteristics of a tragedy; and lists some examples of ancient Greek, Roman, English, and modern-day writers of tragedies.

A nice, concise summary of aromatic hydrocarbons is found here at Wikipedia encyclopedia. The article tells what they are, what Huckel's Rule is, gives information on aromatic bonding, and gives a couple of examples of aromatic...