July 20, 2012 1:56 pm Coping After a Sudden Tragedy In the wake of the mass shooting at a Colorado movie theater, Dr. Joshua Weiner discusses survivors’ guilt, PTSD, and what to do if someone you know may be harboring violent tendencies. Local 2:14 Opioid crisis: National drug take back day on Saturday 2:55 Concussion treatment: Returning to school and limiting screen time may help, study finds 2:39 What to know about ADHD medication and pregnancy 2:08 How to pick the best running shoes for outdoor exercise 3:41 Nail biting: A psychiatrist shares tips