The Latest Breaking News from Potomac

Before Congress passed the Clean Water Act in 1972, U.S. factories and cities could pipe their pollution directly into waterways. Rivers, including the Potomac in Washington, smelled of raw sewage and contained toxic chemicals. Ohio’s Cuyahoga River was so contaminated, its oil slicks erupted in flames.

More than two weeks after a helicopter and airplane collision over Washington killed 67 people, investigators have completed their work at the scene where the aircraft fell into the Potomac River

Watch live as recovery efforts continue in the Potomac River on Monday, 3 February, after the Washington DC plane crash, in which an American Airlines jet and a US Army Black Hawk helicopter collided last week.

Recovery crews and divers are searching the Potomac River for remains and clearing wreckage from the midair collision of a passenger jet and Army helicopter that killed 67 people

Divers are expected to return to the Potomac River as part of the recovery and investigation after the United States’ deadliest aviation disaster in almost a quarter century

Cockpit voice and flight data recorders found from American Airlines flight that collided with military helicopter; 28 bodies recovered from Potomac River

Sixty-seven feared dead after crash in Potomac River in Washington DC

Life-threatening hypothermia can occur in waters much warmer than the Potomac is this week

Here's what we know so far.