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51Physical Sciences — ▪ 2009 Introduction Scientists discovered a new family of superconducting materials and obtained unique images of individual hydrogen atoms and of a multiple exoplanet system. Europe completed the Large Hadron Collider, and China and India took… …
52Parks and Recreation — This article is about the television series. For a list of parks and recreation departments, see Department of Parks and Recreation. Parks and Recreation Parks and Recreation title card Genre Sitcom …
53Education in Germany — The Evangelical Seminaries of Maulbronn and Blaubeuren (picture showing church and courtyard) form a combined Gymnasium and boarding school …
54Egypt, ancient — Introduction civilization in northeastern Africa dating from the 3rd millennium BC. Its many achievements, preserved in its art and monuments, hold a fascination that continues to grow as archaeological finds expose its secrets. This article… …
55Facebook — This article is about the Web site. For the collection of photographs of people after which it is named, see Facebook (directory). Facebook, Inc …
56gas — gasless, adj. /gas/, n., pl. gases, v., gassed, gassing. n. 1. Physics. a substance possessing perfect molecular mobility and the property of indefinite expansion, as opposed to a solid or liquid. 2. any such fluid or mixture of fluids. 3. any… …
57Fusion power — The Sun is a natural fusion reactor. Fusion power is the power generated by nuclear fusion processes. In fusion reactions two light atomic nuclei fuse together to form a heavier nucleus (in contrast with fission power). In doing so they release a …
58Pleistocene Epoch — Earlier and longer of the two epochs that constitute the Quaternary Period. The Pleistocene began с 1.8 million years ago and ended с 10,000 years ago. It was preceded by the Pliocene Epoch of the Tertiary Period and followed by the Holocene… …
59Calendar of 1996 — ▪ 1997 JANUARY JANUARY 1 King Fahd cedes power Still experiencing the effects of a stroke suffered in November 1995, Saudi Arabia s King Fahd, who also held the post of prime minister, ceded temporary power to Crown Prince Abdullah,… …
60roads and highways — ▪ transportation Introduction traveled way on which people, animals, or wheeled vehicles move. In modern usage the term road describes a rural, lesser traveled way, while the word street denotes an urban roadway. Highway refers to a major… …
