In the months following the September 11 terrorist attacks, medical researchers conducted hundreds of tests on the air above New York City. Millions of minute toxic particles were released into the environment when the twin towers collapsed. Doctors have conducted extensive tests on ground zero workers since the tragedy, but pediatric experts say a study of the possible negative health effects on children has yet to be initiated.

Officials with several children's organizations, including the American Academy of Pediatrics, say a comprehensive study on children who live in the lower Manhattan area should be conducted immediately. Health officials fear children may have been exposed to lead, mercury, and asbestos in the weeks following the tragedy. Because children inhale more air per pound than adults, they face a higher risk of developing asthma and other respiratory illnesses. Their lungs and vital organs are also more sensitive to toxic substances.