The worst blizzard in recorded history: the 1972 Iran blizzard

In 1891, Chicago challenged engineers to create a structure to surpass the Eiffel Tower for the World's Columbian Exposition. George Washington Gale Ferris jr. responded with the original Ferris Wheel, a giant rotating structure elevating visitors above the city. This invention became an iconic attraction at the fair.

Slavery was abolished in Mexico in 1829. Slaves were escaping to Mexico, and slaveholders in the US were aware of this. The US attempted to get Mexico to sign a fugitive slave treaty, which would have required Mexico to send back escaped slaves to the US. But, Mexico refused, arguing that slaves were free as soon as they set foot on Mexican soil.

Between 1764 and 1767, a mysterious animal called the Beast of Gévaudan terrorized the French village called Gévaudan. It attacked and killed about 100 adults and children. While most believe it was a wolf, some say it may have been a wolf-dog hybrid, hyena or even a lion, but without any genetic evidence, the beast will remain a mystery forever.

In Cleveland, Ohio, United Way broke the world record by deflating nearly 1.5 million balloons as part of a publicity stunt to raise money. The balloon obstructed a US Coast Guard search for two boaters who were subsequently discovered to have drowned, blocked airport runways, and blocked land and waterways.

In 1971, a high school student was sucked out of an airplane after it was struck by lightning. She fell 10,000 feet to the ground while still strapped to her chair and survived. Only to endure a 9-day trek to the nearest civilization.

Volcanic eruptions can devastate cities, change the world's atmosphere, and devastate economic systems. They can create molten lava rivers, mudslides, suffocating ash, and poisonous gases that cause chaos around the world for years. A volcanic explosion's effects can be massive, from its size to its death toll to its economic cost. Here is ten world’s most destructive and dangerous volcanic eruptions in history.

In 1985, after an 8.0 magnitude earthquake hit Mexico City, nearly all newborn babies survived a collapsed hospital. They are known as “Miracle Babies” for surviving 7 days without nourishment, water, warmth or human contact.

Sony's PlayStation was never meant to be an actual product. Instead, it was intended to be a CD-ROM console that would support Nintendo games. However, when Nintendo backed out of the deal at the last minute, Sony went ahead and launched what soon became one of the most successful gaming consoles of all time.

Poto and Cabengo, as the two girls called each other, communicated in their own language. The twins were ignored by their parents and secluded from the outside world because their father felt they were developmentally retarded, and their unique language evolved as a result of that neglect.

These are the mugshots of Will West and William West, and they are not related. They were both sent to Leavenworth Prison at the same time, in 1903, and after some confusion, the staff understood they had two different prisoners with the nearly same name, who looked exactly alike. They are part of the reason fingerprints are now used as identification.

The ancient city of Jericho is the world's oldest walled city, with evidence of stone fortifications dating back nearly 9000 years.

At the 1912 Olympics, a marathon runner quit and went home to Japan without telling officials and was considered a missing person in Sweden for 50 years. In 1966, he was invited to complete the marathon. His time: 54 years, 8 months, 6 days, 5 hours, 32 minutes, and 20.379 seconds.

Actor Rebecca Hall had serious reservations about tackling the macabre story around why Chubbuck killed herself in 1974. So what changed her mind?

A mother won $2 million from a $10 scratch-off lottery ticket after she spent all of her entire life savings to pay her daughter’s cancer treatment. She bought the winning ticket after her daughter’s last cancer treatment.

In the 1980s, an Indian man spent 72 hours in a glass cabin with 72 snakes, some of which were extremely venomous. His aim was to prove that snakes only attack when provoked. Remarkably, he was not bitten once in those 72 hours and even set a Guinness World Record in the process.

During WWII, a German captain and an engineer flushed the submarine's high-tech toilet incorrectly, causing the vessel to rapidly fill with water. British planes patrolling the sea attacked them as the submarine was brought to the surface. While many members of the crew were killed in the attack, the captain escaped!

The unbroken seal of Tutankhamun's tomb before it was opened in 1923, it was unbroken for over 3000 years.

American environmental activist Julia “Butterfly” Hill lived in a 1500-year-old California Redwood tree for 738 days to prevent it from being cut down by the Pacific Lumber Company. The Simpson’s episode “Lisa the Tree Hugger” was inspired by Hill’s story.

A Greek prime minister in 1830’s tried to spread the potato in Greece but people weren’t interested so he put armed guards in front of shipments of potatoes so people would think they were important. People later started stealing these potatoes a lot which spread the crop to all of Greece.

Richard Jewell, an American security guard, discovered a bomb during the 1996 Olympic Games in Atlanta and assisted in the evacuation, but was later wrongfully accused and faced public scrutiny. He was cleared, but it had a lasting impact on him until his death in 2007 at the age of 44.

On April 28, 1988, Aloha Airlines flight 243 was on the way to Honolulu from Hilo when a huge portion of the upper part of the fuselage blew off the airplane.

Wrigley's was originally a soap company that gifted baking powder with their soap. The baking powder became more popular than the soap so they switched to selling baking powder with chewing gum as a gift. The gum became more popular than the baking powder so the company switched to selling gum.

Before women were allowed to enroll in medical school, Margaret Ann Bulkley studied medicine and assumed the identity of Dr. James Barry for 56 years while dressing as a man. After 46 years of service as an army doctor officer, her secret was not made public until after her death in 1865.

Terry Fox was a 21-year-old one-legged cancer patient who ran 3,339 miles across Canada in 143 days before dying.

The Eiffel Tower was intended to be a temporary structure for the World's Fair in 1889, but it was nearly dismantled and sold for scrap metal. It was saved because of its potential use as a radio antenna, and it now serves as a tourist attraction as well as a working broadcast tower.