tribune co. is gone public again. trading at. >> says the move will help the company: a broader pool of investors. on several television stations including our own wgn tv. when private after sales seven years ago. >> insufficient testing and a poor understanding of the innovative that a real contributor to the grounding of boeing 787 fleet. according to a new report by the national transportation safety board. regulators started investigating the fleet after a fire at boston's airport and another incident in japan. safety board investigated the boston up so suggested for the first time that manufacturing flaws caused the fact that allowed the battery cell to fail. >> to is the season for giving back. today is giving tuesday. creating a national day of giving at the start of the holiday season. it is meant to be a charitable response. >> chicago city council has voted 44-5 to raise the city's minimum wage to $13 an hour by the year 2019. >> girl scout cookies are going to be sold on line for the first time. troops in ch