Researchers study dust

November 11, 2009 1:49:19 PM PST
This may come as no surprise but most of the dust that coats your furniture and floors comes from outdoors. But, a new study suggests, this dirt may do more than aggravate allergies. Research in the journal Environmental Science and Technology suggests dust may pose a little understood health threat. Since it originates from outside, it may contain lead, arsenic and other potentially harmful substances.

Researchers at the University of Arizona say dust-contaminated toys and other objects can end up in the mouths of young children. They are hoping that a specialized computer program will help evaluate ways to reduce these contaminants and human exposure.