there are only two possible explanations
71Nobel Prizes — ▪ 2009 Introduction Prize for Peace The 2008 Nobel Prize for Peace was awarded to Martti Ahtisaari, former president (1994–2000) of Finland, for his work over more than 30 years in settling international disputes, many involving ethnic,… …
72chemical bonding — ▪ chemistry Introduction any of the interactions that account for the association of atoms into molecules, ions, crystals, and other stable species that make up the familiar substances of the everyday world. When atoms approach one another …
73Pythagoreans and Eleatics — Edward Hussey PYTHAGORAS AND THE EARLY PYTHAGOREANS Pythagoras, a native of Samos, emigrated to southern Italy around 520, and seems to have established himself in the city of Croton. There he founded a society of people sharing his beliefs and… …
74number game — Introduction any of various puzzles and games that involve aspects of mathematics. Mathematical recreations comprise puzzles and games that vary from naive amusements to sophisticated problems, some of which have never been solved.… …
75western Africa, history of — Introduction history of the region from the 11th century to the present. A reasonable body of sources for the writing of western African history begins to be available about AD 1000. Three centuries earlier, the Arabs (Arab) had… …
76American bison — B. b. bison Alternate image Historic drawing …
77WOMAN — This article is arranged according to the following outline: the historical perspective biblical period marriage and children women in household life economic roles educational and managerial roles religious roles women outside the household… …
78SN 1054 — Supernova SN 1054 The Crab Nebula, remnant of SN 1054. Credit: NASA/ESA. Observation data (Epoch ?) Supernova type …
79Bicycle performance — Lance Armstrong in a 2004 Tour de France individual time trial …
80heraldry — heraldist, n. /her euhl dree/, n., pl. heraldries. 1. the science of armorial bearings. 2. the art of blazoning armorial bearings, of settling the rights of persons to bear arms or to use certain bearings, of tracing and recording genealogies, of …
