In Rio...From Mean Streets to Clean Streets

The road to Rio de Janeiro will soon be jammed with thousands of delegates attending the U.N.'s June Earth Summit. As green-minded summiteers ponder such now-or-never topics as global warming, the rain-forest crunch and the world's vanishing flora and fauna, the most endangered species of all may be Rio's street children. A Brazilian child-advocacy group reports that 470 juveniles were murdered in the Rio area last year, many of them by death squads made up of off-duty police hired by local shopkeepers. If the authorities can help it, Rio's most endangered species will not be on display at all during the...