The New Year’s Day inferno that ripped through a crowded bar in southern Switzerland, killing at least 40 people and injuring 119, spread so rapidly because of what is known as a flashover, local ...

(CNN) — Swiss authorities have said that a deadly fire at a ski resort bar in Crans-Montana, Switzerland, rapidly developed into a “flashover” – a dangerous phenomenon in which everything in a room ...

Pittsburgh fire Capt. Brian Tarbuck watched smoke billow from a rust-red shipping container as he described how the first responders training inside could spot the telltale signs of an impending ...