EFFECTIVE SPEAKING is a crucial skill. Whether you’re a sports star giving a press conference or a climbing instructor giving a safety demonstration, you need to know how to deliver your words in an articulate and expressive manner. (top left) Streeter Lecka/Getty Images; (top right) JJ/Getty Images; (bottom left) © Chris Kleponis/Zuma/Corbis; (bottom right) © Jeff Morgan education/Alamy