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 14:23 NYPD arrests around 100 protesters at Columbia University 29:11 NYPD moves in on protesters at Columbia University making dozens of arrests 1:45 NYPD enters Columbia University in riot gear to clear protest 1:14 El Minuto 4/30 Spanish Edition 1:02 El Minuto 4/30 English Edition