A slimmer book called "Millions Saved" was published last year. It offered 17 case studies of recent global-health successes. They include an anti-smoking campaign in Poland that since 1990 has produced a 30 percent drop in lung cancer in middle-age men; measles-vaccination campaigns in seven southern African countries that cut the total number of cases from 60,000 in 1996 to only 117 in 2000; and China's introduction of iodized salt in 1995 that cut iodine deficiency in children from 20 percent to 9 percent...