A two-year investigative project uncovers huge, covert national security buildups in the U.S. since the 9/11 attacks, hidden from public scrutiny. (WP)

A comprehensive 25th-anniversary look back at a devastating day in Philadelphia's history, when police bombed a row house. (Philadelphia Inquirer)

Residents near downtown L.A. are afraid to drink their brown tap water, which contains harmful levels of dangerous chemicals. By antiquated Federal standards, it's considered safe. (NYT)

Video series confronts the nightmarish consequences of exposure to the toxic chemical defoliant sprayed by the U.S. during the Vietnam War. (Chicago Tribune)

Pulled back from disaster, the determined U.S. auto industry enters a new age. Multimedia series looks in the rear-view mirror ... and at the rough road ahead. (Detroit Free Press)

Five-part multimedia series investigates the exploitation of U.S. immigrants, legal and illegal, from Tijuana, Guatemala and beyond. (Kansas City Star)

An investigation into the devastating environmental and social impacts of mountaintop-removal coal mining during the last two decades. (Yale Environment 360 / MediaStorm)

Doris "Granny D" Haddock, 94, an indefatigable political activist, throws her straw hat into the ring and campaigns for the U.S. Senate. (Hulu)

Role-playing psychotherapist Barry Spodak creates mentally unbalanced characters to train law enforcement agents who protect politicians and VIPs. (WP)

At the intersection of the U.S. and Mexico, a travelog of two countries embroiled in ever-escalating issues of migration and drug violence. (WP)