Stay informed about some of the most consequential environmental health issues happening in Pittsburgh and around the greater Southwestern Pennsylvania region with our free newsletter Pittsburgh Weekly, sent Fridays. Subscribe today.
Members of the 171st Air Refueling Wing Fire Department conduct training on July 7, 2007, on the Air National Guard base near Pittsburgh International Airport. Firefighting foam has been one of the largest sources of PFAS contamination. (U.S. Air Force photo taken by MSgt. Stacey Barkey)