UC Davis Study Says Major Air Issues at WTC

In the most thorough analysis yet of the dust and smoke blown through lower Manhattan after the collapse of the World Trade Center, researchers at the University of California, Davis, described unprecedented clouds of very fine particles that should be considered in evaluating rescue workers' and residents' health problems. 'No one has ever reported a situation like the one we see in the World Trade Center samples,' said UC Davis researcher Thomas Cahill, Ph.D., an international authority on the constituents and transport of airborne particles. 'The air from Ground Zero was laden with extre...