Pedrinho Matador, born Pedro Rodrigues Filho and nicknamed "Killer Petey," is considered the most prominent serial killer in Brazil, with over 100 victims.
Over 100 nuclear weapons were tested in Nevada in the '50s and '60s, and the fallout affected tons of people. This is the tragic history of nuclear downwinders.
It goes without saying that history's worst dictator -- or at the very least, the worst dictator of the past couple of hundred years -- is Adolf Hitler.
The issue with revenge is that it's a slippery slope. What makes one act unjust, and a retaliatory act not so? Here's what the Bible has to say on this subject.
Achilles was a central hero in the ancient Greek tradition, but he doesn't meet the modern conception of a hero. This is the mythology of Achilles explained.
The Milky Way is home to countless gasses, planets, stars, and even a jaw-dropping 5,000 solar systems. But as a world of its own, how much does it weigh?
Seattle rock band Alice in Chains is best known for its album Dirt and the death of frontman Layne Staley. This is the untold truth of Alice in Chains.
Humans have been dealing with earthquakes since we became a species, considering that the geological processes that create them predate us by billions of years.