A faulty tube caused a nitrogen dioxide leak during an experiment involving nitric acid and copper pennies at Berlin High School| EMS1
Rachel Engel is an award-winning journalist and the senior editor of FireRescue1.com and EMS1.com. In addition to her regular editing duties, Engel seeks to tell the heroic, human stories of first responders and the importance of their work. She earned her bachelor's degree in communications from…| EMS1
Greg Friese, MS, NRP, is the Lexipol Editorial Director, leading the efforts of the editorial team on Police1, FireRescue1, Corrections1 and EMS1. Greg served as the EMS1 editor-in-chief for five years. He has a bachelor's degree from the University of Wisconsin-Madison and a master's degree from…| EMS1
