Their work could give infected mothers in the developing world a new way to prevent the spread of the AIDS virus to their newborn babies.

VOA: special.2010.05.24

The protesters plan to work their way north in vehicle convoys, gradually adding to their numbers as they move through cities and towns in the coming days.

VOA: standard.2009.03.12

So far this month, U.S.officials have sent around to other Mexican border cities with the hope that many of them will not work their way back to Juarez and become part of the city's criminal underground.

VOA: standard.2010.04.01