Book excerpt: For the increasing number of people looking for ways to make a difference while on vacation, this fully updated edition is filled with in-depth information to get them ready for their adventure, including contacts, locations, costs, dates, project details, and profiles of 150 select organizations that run thousands of programs in the United States and around the world. Including new details about long-term projects and organizations specifically tailored for families, seniors, and people with disabilities, this definitive sourcebook provides a wealth of opportunities for anyone interested in taking a truly meaningful vacation and provides new anecdotes about all kinds of jobs and the positive impact they had on volunteers' lives.