challenging
71performing arts — arts or skills that require public performance, as acting, singing, or dancing. [1945 50] * * * ▪ 2009 Introduction Music Classical. The last vestiges of the Cold War seemed to thaw for a moment on Feb. 26, 2008, when the unfamiliar strains …
72United States — a republic in the N Western Hemisphere comprising 48 conterminous states, the District of Columbia, and Alaska in North America, and Hawaii in the N Pacific. 267,954,767; conterminous United States, 3,022,387 sq. mi. (7,827,982 sq. km); with… …
73Media and Publishing — ▪ 2007 Introduction The Frankfurt Book Fair enjoyed a record number of exhibitors, and the distribution of free newspapers surged. TV broadcasters experimented with ways of engaging their audience via the Internet; mobile TV grew; magazine… …
74Challenge–response spam filtering — This article is about e mail. For other uses, see Challenge response authentication. A challenge–response (or C/R) system is a type of spam filter that automatically sends a reply with a challenge to the (alleged) sender of an incoming e mail. In …
75Instant replay in American and Canadian football — In American and Canadian football, instant replay is a method of reviewing a play using cameras at various angles to determine the accuracy of the initial call of the officials. An instant replay can take place in the event of a close or… …
76Christopher Columbus High School (Miami) — Christopher Columbus High School Address 3000 SW Galloway Road (87th Avenue) Westchester, Miami, Florida, (Miami Dade), 33165 3293 United States of America …
77Djebel Ressas — Jebel Ressas Djebel Ressas in cloud cover, as viewed from the northwest Elevation …
78Super Meat Boy — Super Meat Boy …
79Orly Taitz — in 2008 Born August 30, 1962 (1962 08 30) (age  …
80Lesbian — This article is about the sexual orientation. For other uses, see Lesbian (disambiguation) …
