Adam Janos

It started in the 1940s, near A-bomb development sites. More recently, something has been stalking nuclear carrier strike groups.

Lori Ann Piestewa was the first woman to die on the front lines in Iraq and the first American Indian woman to die serving the U.S. Armed Forces.

Former Manson Family member Dianne Lake recalls dumpster diving, orgies and singalongs. 'We were there to serve Charlie.'

Itliong may not be as well-known a name as Chavez, but his role among Filipino-American workers was as critical in the 1965-70 Delano grape strike—if not more.

An earthquake, a tsunami...and then a devastating power plant failure.

Reports persist of UFOs, crop circles, cattle mutilation—and shapeshifting creatures impervious to bullets.

Behind the rumors of America's most infamous UFO incident.

They were cigar-shaped, glowed red and could turn on a dime. Which ruled out even the most sophisticated rockets of the time.

It's clear the California rangers beheaded someone in 1853. What's isn't clear is whether it was the infamous bandit known as 'Joaquín.'

Their paranoia led the agency to launch Operation CHAOS—in direct violation of its charter.

The cockpit voice recorder captured the sound of passengers attempting to break through the door.

Substance abuse in the Vietnam War wasn’t just limited to the marijuana and heroin enlistees could buy on the black market. Military commanders also heavily prescribed pills to help improve soldiers' performance.

They've eaten practically every mammal in sight—and have no natural predators.

Unexplained livestock mutilations have been reported for centuries. Explanations range from common predators to UFOs.

Some blame Mikhail Gorbachev for the collapse of the Soviet Union. But the economy and political structure were already in deep decay.