Childhood blood lead levels rise and fall with exposure to airborne dust in urban areas

http://feeds.sciencedaily.com/~r/sciencedaily/~3/WQUeAO5YxKI/130225102557.htm

A new nine-year study of more than 367,000 children in Detroit supports the idea that a mysterious seasonal fluctuation in blood lead levels — observed in urban areas throughout the United States and elsewhere in the northern hemisphere — results from resuspended dust contaminated with lead.