SAN FRANCISCO - Facebook has agreed to pay $52 million to thousands of U.S. workers who suffer the psychological consequences of reviewing posts depicting acts of suicide, homicide, child abuse, and other disturbing content, lawyers for the workers said Tuesday.

Better known to nightclubbers as ecstasy, the euphoria-inducing drug MDMA appears to alleviate Post-Traumatic Stress Disorder (PTSD) in war veterans, firefighters, and police officers, researchers said Wednesday.