May 22, 2013 9:32 am Device Detects When Child is Left in Hot Car College students in Maryland invent device that detects when a child is left behind in a dangerously hot vehicle. Kate Amara reports. 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