Trove of new 9/11 docs suggest NYC officials knew of air quality health risks

New York City officials are set to release files regarding the air quality at Ground Zero following the 9/11 attacks. A trove of newly uncovered documents suggests that NYC officials were aware of the significant health risks associated with the air quality in the area where the World Trade Center buildings collapsed. These records provide insight into the official knowledge of environmental hazards after two airplanes struck the twin towers during the suspected terrorist attack.