SATURDAY, Oct. 29 (HealthDay News) -- From decorative contact lenses to face paint, experts warn that Halloween costumes may result in a wide array of potentially serious health issues from falls to allergic reactions.

SATURDAY, Oct. 29 (HealthDay News) -- Practice is an essential part of gaining excellence in a specific skill, but to become truly great other qualities must come into play, such as IQ or working memory, according to researchers who studied how practice affects the success of chess players.