In Bolivia, smaller families spur hopes. In a largely unheralded trend, birth rates in developing countries around the world have declined steadily over the last several decades. Beatriz Virginia bathes her nine-month-old daughter in their home in El Alto. With an altitude approaching 15,000 feet above sea level in parts, the thin air is always cold, even in full sun. Rarely are there clouds in the sky and the sun bakes the concrete dwellings, dirt roads, and faces of the children equally. Children often have cracked and bleeding skin until their skin adjusts to the climate.
(Dina Rudick/Globe Staff)