TribLIVE's Daily and Weekly email newsletters deliver the news you want and information you need, right to your inbox. E-cigarettes, the trendy smoking alternative which skyrocketed to popularity in recent years, remains a public health crisis, UPMC St. Margaret respiratory physicians warned. Hospital officials are coordinating with the St. Margaret Foundation to host a virtual program to explain the risks. The free session will be at 10 a.m. on May 21. “A Closer Look at Vaping” will feature Respiratory Therapist Carmen Allmond and Director of Respiratory Services Mark Normile, both on staff at UPMC St. Margaret, near Aspinwall. “I witness the results of the use of e-cigarettes, which can release dangerous chemicals and trace metals into the lungs that cause heart and lung disease,” Normile said. “We feel it is important to share information about the dangers of using these products, especially with impressionable children and teens.”