RIO DE JANEIRO, BRAZIL - A study conducted by researcher Márcia Castro, from Harvard University's School of Public Health, shows that, last year, life expectancy in Brazil dropped 1.94 years on average. The ratio between births and deaths, which was 2.20 to 1 before the crisis, fell to 1.26 to 1 this year. In some places, it was worse: the number of deaths . . .