Here's your daily look at five stories to know about.
1. Merger cleared: A settlement with the Department of Justice means the merger of US Airways Group and American Airlines is set for flight. The deal is slated to close early next month and will create the world's biggest airline.
2. Witness intimidation: A 17-year-old Philadelphia high school student has been charged with witness intimidation for allegedly posting grand jury evidence on Twitter, and police are investigating whether Nasheen Anderson is also linked to an Instagram account that disclosed the identities of violent crime witnesses.
3. Mount Holly housing: The Mount Holly Township council is expected to vote tonight on a settlement to end a long-running housing-discrimination case. Approving the settlement would resolve the issue just weeks before the U.S. Supreme Court is scheduled to hear the case.
4. Endangered species: A Pennsylvania House committee is set to vote today on a controversial bill that would move control of the state's list of endangered species from biologists to legislators.
5. Inquirer court hearing: Arguments are scheduled for today in a lawsuit filed by two owners of the Philadelphia Inquirer, who want a judge to overturn the dismissal of editor William Marimow.