This year, once again, the annual report from the Joint United Nations Program on H.I.V./AIDS and the World Health Organization tragically documents the way the global AIDS epidemic is still killing millions of people and spawning hot spots in Asia and Eastern Europe. The most striking news is that AIDS is fast becoming a disease that strikes younger women disproportionately. Ignorance is part of the problem, but the laws and social customs that keep women powerless and poor - and subject to sexual exploitation - are far more insidious. According to the new report's eye-opening analysis, AIDS is spreading quickly...