It's Monday. Get your week started with five stories to know about:
1. Collapse aftermath: Lawyers representing victims of last week's deadly building collapse in Center City have begun inspecting the site. Several civil lawsuits were filed in the days after a building in the process of being demolished at 22nd and Market streets collapsed, killing six people and injuring 14. Meanwhile, Sean Benschop, the 42-year-old excavator operator facing involuntary manslaughter and other charges in the collapse, has been denied bail and City Council is expected to announce a special investigative committee today that will look into the incident.
2. U.S. Open week: It's U.S. Open week at the Merion Golf Club in Ardmore. Follow along with our complete coverage here. The week got off to a less-than-promising start for Tiger Woods this morning, when lightning put a halt to his practice round.
3. Lung-donation rules: The Organ Procurement and Transplantation Network's executive committee meets today, and could announce a review of transplant rules governing organ donations. The OPTN's policies have come under fire after the families of two dying children hospitalized in Philadelphia are arguing that children under age 12 should be able to receive adult lungs. Additionally, Pennsylvania Sen. Pat Toomey is slated to visit one of the children, 10-year-old Sarah Murnaghan, and her family today.
4. N.J. Senate race: Today is the deadline to file paperwork to run for one of New Jersey's U.S. Senate seats. Voters will choose the replacement for Sen. Frank Lautenberg, who died last week. The primary is Aug. 13 and the special general election is Oct. 16. Newark Mayor Cory Booker's campaign got a major boost over the weekend, when he received an endorsement from Democratic power broker George E. Norcross III.
5. NSA leaker identified: Edward Snowden has identified himself as the source for stories in the Washington Post and Guardian about government surveillance programs. Snowden, a former CIA employee and contractor for the National Security Agency, works for the consulting firm Booz Allen Hamilton and says he has "done nothing wrong."