On April 11, 2011, the one-month anniversary of the earthquake, ChimPom artists traveled to the Fukushima Daiichi plant wearing Hazmat suits to create a new version of the Japanese flag.

How Chim Pom, a provocative group of young artists, is challenging the status quo in Japan after the March 11 earthquake and tsunami. Its work, ranging from video pieces to rogue installations in public places, comes at a generation-defining moment as many question Japan's dependence on nuclear power.

An inside look at a California sheriff's innovative -- and controversial -- program to license medical marijuana growers. From "The Pot Republic," airing July 26, 2011.

More than half of the marijuana consumed in the United States is believed to be home grown in California, where an enormous black market has emerged under the cover of the state's medical marijuana law. FRONTLINE and The Center for Investigative Reporting team up to investigate the country's oldest, largest, and most wide-open marijuana market.

Sgt. Randy Johnson used to bust pot growers. Now he works with them. With more than a third of all states now trying some form of legalization and decriminalization, and several California counties attempting to openly regulate pot production, FRONTLINE and the Center for Investigative Reporting investigate the country's oldest, largest and most wide-open marijuana market in "The Pot Republic."

FRONTLINE's fall 2010 image campaign.

Correspondent Charles Sennott once again witnesses protests and tear gas in Tahrir Square.

In a follow-up to FRONTLINE's "College, Inc.," correspondent Martin Smith investigates how for-profit schools are aggressively recruiting huge numbers of new veterans with educational promises that many now question whether they can keep.

What happens when a child dies under suspicious circumstances? Abuse is often suspected, but are forensic pathologists being properly trained to find out the cause of death?

Coming June 28. In this joint investigation with ProPublica and NPR, FRONTLINE correspondent A.C. Thompson unearths more than 20 child death cases in which people were jailed on medical evidence -- involving abuse, assault and "shaken-baby syndrome" -- that was later found unreliable or flat-out wrong. Are death investigators being properly trained for child cases?

As a federal trial gets underway, a look back at the infamous post-Katrina shooting by police that killed two unarmed citizens and wounded four. Five current and former NOPD officers face charges ranging from civil rights violations to covering up the incident.

FRONTLINE correspondent Martin Smith ("College Inc.") continues to investigate for-profit colleges, this time focusing on their aggressive recruitment of veterans from Iraq and Afghanistan. Are the for-profits exploiting a generous new GI bill and making promises that they can't keep? "Educating Sergeant Pantzke" is the second of three magazine segments airing June 28.

ProPublica's Sebastian Rotella describes how the "restrained" testimony of confessed Mumbai terrorist David Coleman Headley differed from interrogation videos from 2009 shown in court. The videos, says Rotella, depict a "much more animated, eager, almost frantic" man trying to make a deal.

"Five days of in-depth, detailed, rare testimony from a consummate insider, is fascinating and very unusual in a U.S. courtroom," says ProPublica's Sebastian Rotella. He describes how the dramatic testimony of David Coleman Headley, a confessed terrorist of the 2008 Mumbai attacks, reveals a striking portrait of "a man taking stock of the wreckage of his life."

In this excerpt from "WikiSecrets," coming May 24, FRONTLINE uncovers video of Pfc. Bradley Manning around the time he allegedly handed over half-a-million classified documents to the WikiLeaks website. With exclusive access to those closest to Manning--including his father, close friends and his Army bunkmate--FRONTLINE explores how and why the secret cache of documents may have been leaked.

In this excerpt from "WikiSecrets," coming May 24, FRONTLINE correspondent Martin Smith tells the story of Pfc. Bradley Manning and his struggle with the Army's Don't Ask, Don't Tell policy. Manning is currently charged with handing over half-a-million classified documents to the WikiLeaks website.

American David Headley has admitted to doing reconnaissance for a terrifying plot to attack the Danish newspaper that published the cartoons of the Prophet Muhammed. The plan was to take employees hostage and decapitate them and throw their heads out the window. ProPublica reporter Sebastian Rotella explains how Headley cased the city.

FRONTLINE examines the biggest intelligence breach in U.S. history and the two men behind the leaks: WikiLeaks founder and Internet activist Julian Assange and the Army intelligence analyst Bradley E. Manning. Through in-depth interviews with Manning's father, Assange and others close to the case, veteran FRONTLINE correspondent Martin Smith tells the full story behind the leaks.

Samraz Rana insists her husband Tahawwur was not involved in the Mumbai attacks, despite the claims of David Headley, the government's star witness -- and Tahawwur's childhood friend and business partner.

His U.S. passport made him "a dream come true" for Lashkar-i-Taiba, the Pakistani group behind the 2008 attacks in Mumbai. But having been caught smuggling drugs, Headley also worked as an informant for the U.S. Drug Enforcement Agency. "He just turns around immediately and betrays everybody when it's convenient for him," says one terrorism analyst.