"Mom, I just saved a life!" On July 5, a young man went into cardiac arrest and collapsed suddenly at a local basketball court in Ningbo, east China. Sheng Xuluo, a 15-year-old student from Yinzhou Experimental Middle School, immediately recognized the symptoms and sprang into performing CPR. Moments later, a resident in the neighborhood Xu Deli joined the effort, providing mouth-to-mouth resuscitation. For a tense 11 minutes, their combined efforts continued relentlessly until emergency medical personnel arrived on the scene. Thanks to their...