Wikipedia provides an encyclopedia entry about concrete that features pictures, diagrams, history and other information, as well as links to related topics.

This site from Wikipedia gives a comprehensive overview of capital. Includes many economic terms with links for further clarification. A good analysis of multiple aspects of capital.

This Wikipedia site is an introduction to paramagnetism and paramagnetic materials.

This site from Wikipedia provides a wonderful in-depth explanation of ferromagnetism, covering the atomic behavior which is responsible for ferromagnetic properties. Also introduces the concepts of magnetic domains and the Curie...

This Wikipedia site has a definition of the Curie point.

This site from the encyclopedia Wikipedia provides a concise definition of magnetic permeability given in terms of magnetic flux density and magnetic field strength.

Explains the origin and history of the Save the Children global relief organization, as well as its campaigns, structure and accountability, and controversies it has faced.

A thorough article on the politics of Russia. Includes an explanation of the branches of government, the constitution, political parties and elections, and local and regional governments.

This article explains what an oracle is and discusses some of the prominent oracles in classical Greece, primarily the one at the temple of Apollo in Delphi. Links are also provided for additional information.

Discusses what separation of powers is, what it looked like in the past, and how it is interpreted in countries around the world and in the United States.

An encyclopedia article on price fixing discusses what it is, gives examples of different methods of price fixing, example of price fixing in international settings, and information about the allegations that the U.S. record industry...

A brief but informative description of the placenta. Includes various links to further explain terminology used in the description.

This site gives a description of venture capital. Includes links to words that need further clarification.

This site offers an encyclopedia entry on the Socialist Party of the United States.

A good overview and description of propaganda. Looks at types, techniques used, theories and models, and propaganda directed at children.

Presents the 1988 Olympic Winter Games that were held in Calgary. Discusses the games, why Calgary was chosen and what occurred at the games.

A thorough account of the party's rise and fall. Includes information on election results covering the period from 1935-1958.

The Battle of Aegospotami in 405 BC resulted in the destruction of the Athenian navy in the Peloponnesian War and led directly to Athens' final defeat by Sparta in the following year. Read the details of the battle at this site.

Wikipedia's encyclopedia entry for Rome, the capital city of Italy, which became the capital during the days of the Roman Republic. Links are also provided for additional information on related subjects.

A wonderful, information-packed encyclopedia article from Wikipedia on the Molotov-Ribbentrop (Nazi-German) pact presents a good summary of the events that led up to the signing of the pact. There is also a link to the text of the pact.

A description of the Voskhod spacecraft along with a listing of the Voskhod flights that occurred and ones that were cancelled.

An article on Vajrayana, one of the three Buddhist routes to enlightenment. The article includes the history of Vajrayana and its teachings, as well as information about its development in places beyond India, such as China, Japan, and...

A home of Frances Perkins, Secretary of Labor and the first woman to serve in the United States Cabinet.

The tallest man-made monument in the U.S., the arch is based on a weighted catenary design conceived by Finnish American architect Eero Saarinen. In 1967, the 630 feet (190 m) structure was opened to the public as part of the Jefferson...