The health of millions of children worldwide is threatened by global warming and air pollution. The world's poorest kids are at highest risk, experts say, of getting caught in a growing asthma epidemic. In a report released Thursday, researchers at the Harvard Medical School's Center for Health and the Global Environment said the warming global climate is releasing more allergens into the air. Once floating in the sky, the allergens combine with pollutants such as ozone and soot, resulting in a recipe for a health crisis. "The combination of air pollutants, aeroallergens, heat waves and unhealthy air masses -- increasingly...
