By Robert Bazell, NBC News Chief Science Correspondent
Tonight we report on the problem of concussions in high school sports. As football season gets underway there is once again attention to problem of brain injury in young athletes. New research shows that the younger a person, the more susceptible the growing brain is to the trauma of concussion. The only treatment is for the young athlete's brain to rest, certainly from sports that can risk further injury and often even from strains of other kinds such as school work. Some of the best sources of information come from the federal government's Centers for Disease Control and Prevention (CDC). It includes information for parents, coaches and students.