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. US & World Videos 1:36 Arizona Senate repeals 1864 abortion ban 2:15 Heavily-camouflaged minors charged after ‘assassins' game at Old Lyme school 2:40 7th grader brought gun to school in Hartford: police 1:40 Democrats say Big Oil misled public for decades about climate change 1:36 A student brought a gun to middle school in Hartford: police