A firefighter has climbed a Himalayan mountain in his full work kit, in preparation for an attempt to do the same on Everest.

Unfortunately, PFAS can be found in a variety of consumer products, and most structural firefighting gear, due to their high-heat resistance and ability to repel water and oil. Before Racioppi ...

Firefighters have more PFAS in their blood than the average person. It isn't clear why, but one theory is that it comes from the protective equipment they wear during a fire—called turnout gear.