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Walter O. Johnson, a former convict who is about to stand trial in the fatal shooting of a Metro Transit Police officer, attacked Mafia boss John Gotti more than seven years ago during a stay in prison, according to court papers.

World in the Balance Student Handout Calculating Population Growth Use the instructions on this handout to calculate population growth estimates for your assigned countries. Procedure Multiply the initial population by the growth rate. This will give you the number of individuals that are added to the population in a 10-year period. (This number should be

Bill Walsh, a Post copy editor since 1997, is the author of Lapsing Into a Comma, The Elephants of Style and Yes, I Could Care Less. He tweets about language as @TheSlot. Starting today, you will no longer read about e-mail or Web sites in The Washington Post. Or open-mike nights or Wal-Mart. Here, as

Classification: Post Doc 12 month Job Category: Postdoctoral Faculty Job Type: Full-Time Work Schedule: Full-time (1.0 FTE, 40 hrs/wk) Location: Fairfax, VA Telework Friendly: No Salary: Salary commensurate with education and experience

Member of the International Tennis Hall of Fame who was a three-time singles French Open champion and a two-time Wimbledon and US Open winner. He grew up playing tennis in Paris, France. He won a Wimbledon doubles title in 1925.