January 25, 2015 9:45 am Positively Black: COSIGN Tracie Strahan speaks to Esosa Ighodaro and Abiodun Johnson about an app that rewards uses for sharing items on social media. Local 2:06 NYPD investigating after series of unprovoked attacks in Central Park 2:14 Final day of classes set for spring at Columbia as negotiations with protesters reach impasse 2:42 Woman fighting for life after carjacker's crash into NJ bar 3:20 Columbia encampments continue for second week 5:03 Bill's Books: Books about history and history through poets