Content from The Associated Press

As the Russian invasion begins, a team of Ukrainian journalists trapped in the besieged city of Mariupol struggle to continue their work documenting the war's atrocities.

Amid the failing counteroffensive, a journalist follows a Ukrainian platoon on their mission to traverse one mile of heavily fortified forest and liberate a strategic village from Russian occupation. But the farther they advance through their destroyed homeland, the more they realize that this war may never end.

How did PFAS chemicals once used in popular stain-resistant carpets end up in the water and environment in parts of Georgia, Alabama and South Carolina? FRONTLINE, The Associated Press, The Atlanta Journal-Constitution, The Post and Courier and AL.com investigate what happened with these forever chemicals and the ongoing health impacts. The joint investigation draws on thousands of pages of documents and court depositions and interviews with former regulators and industry insiders, as well as doctors, scientists and people who have the kinds of illnesses that researchers have linked to PFAS contamination.

FRONTLINE and The Associated Press examine allegations of fraud and abuse in South Korea’s historic foreign adoption boom. The documentary investigates cases of falsified records and identities among the adoptions of 200,000 children to the U.S. and other countries over decades.

This documentary that takes viewers inside one of the world’s most sinister secret societies — the Ku Klux Klan. Based on an award-winning investigative AP series, the true-crime documentary captures the infiltration of the klan in northern Florida by a former Army infantryman named Joe Moore and includes exclusive new interviews with the FBI agents who oversaw the operation and exposes systemic corruption.