Brenda Martinez
FILE - In this Sunday, July 28, 2019, photo, Shelby Houlihan crosses the finish line as she wins the women's 5,000-meter run at the U.S. Championships athletics meet, in Des Moines, Iowa. Increasingly sensitive instruments designed to detect banned substances have the ability to pick up increasingly miniscule amounts of those substances in an athlete’s system. In some cases, athletes ingest them intentionally. But in a growing number of instances, the banned drugs enter their systems in completely unintentional ways. (AP Photo/Charlie Neibergall, File)
Doping sleuths keep sunscreen from burning track stars

By Eddie Pells Jul. 15, 2022 01:00 PM EDT