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perfluoroalkyl and polyfluoroalkyl substances
(Encyclopedia)perfluoroalkyl and polyfluoroalkyl substances (PFAS), a group of several thousand synthetic organic chemical compounds made up of a chain of carbon atoms bonded to fluorine atoms. PFAS, which resist w...physical education and training
(Encyclopedia)physical education and training, organized instruction in motor activities that contribute to the physical growth, health, and body image of the individual. The historical roots of physical education ...Russian art and architecture
(Encyclopedia)Russian art and architecture, the artistic and architectural production of the geographical area of Russia. Around the turn of the century Mir Iskusstva (World of Art Group) was initiated, a movemen...Saint Christopher and Nevis
(Encyclopedia)Saint Christopher and Nevis: see Saint Kitts and Nevis. ...Saint Kitts and Nevis
(Encyclopedia)CE5 Saint Kitts and Nevis or Saint Kitts–Nevis nēˈvĭs, nĕvˈĭs [key], officially Federation of Saint Kitts and Nevis, island nation (2015 est. pop. 52,000), 120 sq mi (311 sq km), West Indie...Saint Pierre and Miquelon
(Encyclopedia)Saint Pierre and Miquelon săN pyĕr, mēkəlôNˈ [key], French territorial collectivity (2015 est. pop. 6,000), 93 sq mi (241 sq km), consisting of nine small islands S of Newfoundland, Canada, in t...São Thomé and Principe
(Encyclopedia)São Thomé and Principe: see São Tomé and Principe. ...São Tomé and Principe
(Encyclopedia)CE5 São Tomé and Principe prēnˈsēpə [key], officially Democratic Republic of São Tomé and Principe, republic (2015 est. pop. 196,000), 372 sq mi (964 sq km), W Africa, in the Gulf of Guinea...San Andrés and Providencia
(Encyclopedia)San Andrés and Providencia, district (1990 est. pop. 39,949), 21 sq mi (54 sq km), Colombia, comprising two small islands and seven groups of coral reefs and cays in the Caribbean 125–200 mi (201...Turks and Caicos Islands
(Encyclopedia)Turks and Caicos Islands kīˈkōs [key], dependency of Great Britain (2015 est. pop. 34,000), 166 sq mi (430 sq km), West Indies. There are more than 30 cays and islands, of which eight are inhabited...Browse by Subject
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