Here's your round-up of five stories we're tracking today:
1. Tragic crashes: The region is still reeling from two major car crashes Tuesday and Wednesday. A mother and her three young sons were killed in a Tuesday night crash on Roosevelt Boulevard in Philadelphia, and two men have been charged with vehicular homicide, third-degree murder, involuntary manslaughter and other offenses related to the collision. A witness told police that two cars were drag-racing along on the boulevard at the time of the crash. Then, Wednesday night, a rollover crash on the Atlantic City Expressway sent 10 people, including multiple children, to the hospital, two in critical condition. It wasn't known Wednesday night what caused the crash.
2. Collapse hearing: A City Council investigative committee looking into last month's deadly building collapse in Center City holds its latest hearing today. The hearing -- which is expected to feature testimony from a Drexel professor, a demolition professional and city officials from the Revenue, Water and Streets departments -- comes as the mayor and council have been sparring over access to information. The Nutter administration previously told the council that it wouldn't provide public testimony for the upcoming hearings, but reversed course earlier this week.
3. Twitter indulgences: Pope Francis has decreed that Catholics who follow his sermons online via Twitter will receive "plenary indulgences" -- forgiveness for sins -- during the pope's trip to Brazil for the World Youth Festival later this month.