The Pittsburgh Intergovernmental Cooperation Authority destroyed or lost nearly all financial records that tracked its spending. The agency's executive director acknowledges the lack of financial records in a sworn affidavit.

The Trib analyzed millions of federal records and found federal prosecutors declined to pursue civil rights allegations against law enforcement officers 96 percent of the time. For other crimes, prosecutors rejected about 23 percent of complaints.

Traveling by Jeep, boat and foot, Carl Prine and Justin Merriman covered nearly 2,000 miles over two months along the border with Mexico to report on coyotes — the human traffickers who bring illegal immigrants into the United States.

Online attacks represent a new front in wars fought with computer keystrokes, rather than weapons. Future strikes could be destructive — even deadly — targeting nuclear power plants, water systems, railways, air traffic control and hospitals.

Many Americans have joined or tried to join the Islamic State. Other Americans — it's impossible to say how many — sympathize with the group, and some of them will try to join the self-declared caliphate, counterterrorism experts say.

Accidents involving gas distribution lines have killed more than 120 people, injured more than 500 others and caused more than $775 million in damage since 2004, according to a Tribune-Review analysis — not including civil lawsuits.

A Tribune-Review investigation of the nation's independent organ procurement organizations reveals a lucrative trade with little financial oversight: 51 of the nonprofits collected revenue of $1.2 billion and recovered more than 80,000 body parts.

Federal health authorities reported a deadly outbreak of Legionnaires’ disease at VA Pittsburgh Healthcare System which began in February 2011 and ended in November 2012. The outbreak killed at least five veterans and sickened at least 16 more.

In a two-year investigation, the Tribune-Review investigated what happened outside the village of As Sadah, Diyala Province, when two teenage cattle herders were killed.

More than half the world's money passes almost undetected through a series of financial black holes that shelter it from not only the tax collector but from shareholders, partners and wives, a Tribune-Review investigation found.

Charities and consumer-product companies raise up to $6 billion a year for breast cancer research. Yet for all the publicity, little attention focuses on gaping racial divides in diagnoses and deaths from the disease.

Hospitals and doctors make more money by aggressively treating terminal patients than by keeping them free of pain and letting them die with dignity. Some doctors derisively call the practice "flogging" — as in, beating a dead horse.

Thousands of sick and wounded soldiers within the Army's Warrior Transition program aren't receiving psychological care they need and are being discharged into communities ill-prepared to help them.

Hundreds of patients each year undergo liver transplants when they don't need them, and possibly never will, a four-month Tribune-Review 2008 investigation found. One in 10 of those patients dies when they could have lived longer without the transplant.

The failure of doctors at dialysis clinics to inform thousands of patients about kidney transplantation may be shortening lives and costing taxpayers millions of dollars a year, a Tribune-Review investigation found.