Though rare, sudden deaths in racehorses have long proven a source of great frustration for being just that--a sudden event with virtually no way to predict it, and oftentimes no way to explain it. Emerging research, however, offers real hope that perhaps soon, the industry will have a way to both zero in on the small number of horses at heightened risk of apparent sudden death, as well as a better understanding of just what might be happening to them. Using data from more than 21,000 horses who wore the...