From trying to "cure" homosexuality to severing dogs' heads to study artificial lungs, we give you the most WTF science experiments known to humankind.History is filled with examples of cruel and unusual experiments performed on human beings and animals for the so-called sake of advancing science. Even at the time they were performed, such experiments should have been considered crazy. And today, at the very least they should elicit a “WTF?

Unlike their Hollywood counterparts, the real-life Men in Black are mysterious figures who threaten people who have reported paranormal experiences.EyeEm/Getty ImagesThe real-life Men in Black are characterized by their unremarkably ordinary faces, pale skin, and dark suits. In 1997, Men in Black hit theaters. A science-fiction comedy based on a Marvel comic series and starring Will Smith and Tommy Lee Jones, the film tells the story of an NYPD officer who unwittingly chases down a disguised alien and is recruited to join a top-secret organization, the Men in Black, with the goal of keeping the public unaware of alien refugees on Earth.

From 2000 to 2015, Jared Fogle was Subway's most famous spokesperson — and a secret child predator committing horrific sex crimes.Mariela Lombard/ZUMA Press, Inc./Alamy Stock PhotoJared Fogle was convicted of child sex tourism and possession of child pornography in 2015. Known as the “Subway Guy,” Jared Fogle was the franchise’s best-known spokesman. He first became a household name across America after he claimed to have lost 245 pounds in less than a year by eating two Subway sandwiches per day.

Albert Cashier was born Jennie Hodgers and would become a top-notch private for the Union Army during the American Civil War.Wikimedia CommonsAlbert Cashier’s portrait as a soldier. On Wednesday morning, Donald Trump tweeted an announcement that trans people would no longer be able to serve in the United States military. The response was overwhelming from across the political spectrum. But the fact of the matter is that trans people have always contributed to civic life and collective security — what has changed, however, is popular acknowledgment of it.

Tomás de Torquemada was responsible for over 2,000 deaths during the Spanish Inquisition, all in the name of keeping Catholicism alive in Spain. Getty ImagesTomas de Torquemada In 15th century Spain, there lived a man named Tomas de Torquemada. Though his name is often lost in the pages of history, he had a hand in almost every major event that occurred in Spain during his lifetime. Had it not been for Torquemada, Columbus may never have sailed to the Americas, the Spanish Inquisition may never have happened, and, perhaps most importantly, 2000 Spanish citizens would never have lost their lives.