The candidates for who has killed the most people in history range from despotic leaders to imperial rulers, all of whom killed millions of people during their bloody reigns.Human history is scattered with cold-blooded killers. Some of them led nations and saw millions perish under their harsh rule. Others took lives single-handedly, either as soldiers or as murderous serial killers. But who killed the most people in history? In the running for history’s worst mass murderers are vicious leaders like Genghis Khan, Adolf Hitler, and King Leopold II.

Investigations into Viktoria Nasyrova's history painted a deeply disturbing image that included murder, international arrest warrants — and, of course, poison. Queens District Attorney’s OfficeThe cheesecake container that held the poisoned treat. A New York City court sentenced a Russian woman to 21 years in jail for attempted murder, assault, and other charges after poisoning her doppelgänger with a drug-laced cheesecake in an effort to steal her identity. The woman behind the crime, Viktoria Nasyrova, is a Russian national and known con woman who’s been accused of various robberies and even murder.

The scale was between one and five and found that women with the most severe form of endometriosis were generally better looking than women of a milder form or without the condition at all.PixabayResearchers have called for the retraction of the study which evaluated the attractiveness of women suffering from endometriosis. Typically, medical research studies are performed with the belief that its findings will benefit public health. But this medical study from 2012 which evaluated the attractiveness of women suffering from endometriosis — a painful reproductive condition that affects an estimated 176 million women in the world — seems to do anything but that.

Zeng Jinlian: The Tallest Woman Ever Recorded Guinness World Records/XZeng Jinlian stood 8 feet, 1 inch tall by the time she died in 1982. The next entry on our list of the tallest people ever is Zeng Jinlian, from China, who stood 8 feet, 1 inch tall. That makes her the tallest woman ever recorded. But sadly, she never actually made it to womanhood. Born in Yujiang village in China’s Hunan Province, Jinlian exhibited abnormal growth from a young age.

In 1903, Parisian police clerk Alphonse Bertillon became the first to photo document a crime scene. Years earlier, he streamlined the use of mugshots, effectively revolutionizing detective work all with a camera. Monsieur Falla, murdered in his sleep, in the corridor of his apartment at 160 Rue du Temple in Paris, 1905.Public Domain When Alphonse Bertillon joined the Prefecture of Police in Paris in 1879, the department had already collected 80,000 photographs of known criminals.

If you walk into just about any bar in the United States on May 5, chances are that someone in there will be celebrating “Mexican Independence Day.” Not only are these people likely drunk, they’re also wrong. In the words of Alfonso Sumano, Regional Director of the Mexican Tourism Board in New York, “It is a big celebration of Mexican pride, and we’re OK with that, as long as everyone knows that it’s not related to Mexican independence.

The discovery was kept a secret since July, but experts have since found further artifacts in the same area.JÖNKÖPINGS LÄNS MUSEUMThe 1,500-year-old sword in Vidöstern Lake. An eight-year-old girl stumbled upon a 1,500-year-old sword while out swimming in Vidöstern lake near her family’s summer home. Swedish-American Saga Vanecek was “throwing sticks and stones” while out in the lake when she what she described as “some kind of stick.” “I picked it up and was going to drop it back in the water, but it had a handle, and I saw that it was a little bit pointy at the end and all rusty.

Michele Anderson And The 2007 Carnation Murders King County Prosecutor’s OfficeMichelle Anderson and her boyfriend, seated center in this 2002 photo. Anderson killed her brother, Scott, left, his wife Erica, far right, and their daughter, Olivia, in 2007. Like Ronald Gene Simmons, Michele Anderson used a family gathering on Christmas as a means to murder. On Dec. 24, 2007, Anderson and her boyfriend James McEnroe killed her parents, her brother and sister-in-law, and her brother’s two children in Carnation, Washington.

The Kallikantzaroi, The Greek Christmas Goblins Trying To End The World During the 12 days of Christmas, beware, for the Kallikantzaroi may emerge from their homes at the center of the Earth to wreak havoc and cause mischief after the sun sets. These foul, ugly beings will break into your home, urinate on your plants, cause your food to spoil, smash furniture, and generally be a proper nuisance if you aren’t careful.

Known as the "European Championess," Elizabeth Wilkinson enjoyed a six-year career as boxer. For her final bout, she was paid ten pounds, a healthy sum in 1728.VICE A woman trains with gloves and bags in 1890.Underwood Archives/Getty Images Two women pose in a boxing stance, circa 1900. Women's boxing at this time was more a choreographed affair featuring only some light punches — to better align it with Victorian sensibilities.