The Democratic National Convention has been running for almost 200 years - the first was in 1832 - and there have been plenty of controversial moments.
Imagine being on the crew that followed orders to commit mass murder by dropping atomic bombs on Hiroshima and Nagasaki. Here's how the plane crew reacted.
There are still a few lingering mysteries about the Jonestown massacre, including questions surrounding the death of Peoples Temple cult leader Jim Jones.
Adolf Hitler crafted his public image through years of propaganda and myth-making, but the facts revealed after his death paint a starkly different picture.
In popular culture through the ages, the devil has received a lot of attention, but there are many details that don't make sense about Satan in the Bible.
There are a vast number of writings said to have been the word of Jesus, may of which are not in the Bible. Here are some of the secret teachings of Jesus.
Even in the chaos of war, military forces worldwide have a set of rules that soldiers must follow. Some are obvious, but other rules are surprisingly strange.
The Battle of the Bulge took place for over five weeks at the end of World War II. Here's what happened to the bodies left after the horrific conflict.
Decades after the Challenger disaster killed all seven crew members, including teacher Christa McAuliffe, there are still things that defy explanation.
The volcanic eruption of Mount Vesuvius in A.D. 79 famously destroyed Pompeii and killed thousands. But some details of the ancient disaster don't make sense.
Purgatory is a concept that was eventually institutionalized in the Catholic Church and further explored by writers. Some people have said they've been there.
During World War II, there were some particular United States laws that had a chilling connection to Germany amid the rise of Adolf Hitler. Here's the story.
Herculaneum, like it's neighboring city Pompeii, was destroyed and buried by the eruption of Mount Vesuvius in 79 C.E. Here's what happened to the bodies.
We might think we know all about every U.S. president in history. But there are still a few unsolved mysteries about past presidents and their affairs.
The Hiroshima and Nagasaki bombings were among the worst atrocities humans have inflicted. Is this what the world would look like if they never happened?
People have long tried to change the course of history by assassination. The most dangerous of these assassins caused far more harm than they may have intended.
Theodore Roosevelt was one of the more charismatic presidents in U.S. history, but beneath the tough exterior, Roosevelt's life was full of tragic challenges.