Korey Stringer died from heat stroke 25 years ago. His widow has made prevention her life’s mission

Korey Stringer died from exertional heat stroke in 2001, leading his widow, Kelci Stringer, to establish the Korey Stringer Institute (KSI) focused on heat stroke prevention. The institute, now with 100 employees, has influenced 463 laws and policies across the U.S. and collaborates with the NFL on health and safety measures.