What exactly was the US's 'Ghost Army' during WWII?

Penicillin was discovered by Alexander Fleming, but he never attempted to turn it into an antibiotic. It wasn't until ten years later that Howard Florey discovered Fleming's obscure paper and understood the mold's potential. Up to 200 million lives may have been saved as a result of Florey's work.

Before women were allowed to run in the Boston Marathon, Kathrine Switzer participated. A race official attempted to forcefully remove her from the race in 1967, but her boyfriend pushed him down. She was the first female finisher who had a numbered entry in the race.

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.

In 1859, wealthy settler Thomas Austin released 13 wild rabbits on his Australian estate. By 1920, their population grew to 10 billion.

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

For years, scientists didn’t know what caused mysterious cave networks in South America. In 2010, they learned that the caves were actually tunnels dug by ancient giant sloths

After Kansas mill owners found women reused flour sack materials into apparel in the 1920s and 1930s, they started applying patterned designs to give families with more fashionable patterns and material.

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!

In 2009 in a coal mine of Columbia, scientists discovered fossils of the world’s largest species of snake. The species is called “Titanoboa cerrejonensis,“and it is from around 60 million years ago. It would have had measured about 48 feet long and weighed about 2,500 pounds

A man named Nicholas Winton saved 669 kids during WWII and lived almost all his life without letting people know.

On October 24, 1593, while performing his guard duties at Manila's Governor's Palace in the Philippines, Gil Perez stopped to lean against a wall and sleep for a while. He opened his eyes to find himself in an unusual environment. Gil was in the Plaza Mayor in Mexico City. They imprisoned Perez, but the authorities in Mexico City decided to release him and return him home.

Henry Ford was the first Industrial Giant to give his employees both Saturday and Sunday off in the hope of encouraging more leisurely use of automobiles and thus popularizing the concept of the "weekend."

After the death of her husband, Mary Ann Bevan had no income to support herself and her children. She then decided to enter a contest where she won the title of “ugliest woman” and was later hired by a circus. She endured this ridicule from the world to provide for her family.

Archduke Franz Ferdinand of Austria and his wife Sophie are shot to death by a Bosnian Serb nationalist during an official visit to the Bosnian capital of Sarajevo on June 28, 1914. The killings sparked a chain of events that led to the eruption of World War I by early August.

Queen Elizabeth II, who ruled Britain for 70 years, has away at the age of 96. She was the country's longest-reigning monarch. Here are some little-known facts about her.

Thomas Baker instructed his team to leave him with a pistol and eight bullets propped up against a tree after he was injured. Later, American troops discovered the now-deceased Baker in the same location, lying next to eight dead Japanese soldiers and carrying an empty pistol.

Deep in the Ecuadorian Amazon, archaeologists have uncovered an ancient network of urban settlements once inhabited by the Upano people about 2,000 years ago. Using cutting-edge lidar technology, these discoveries reveal a highly organized society featuring sophisticated agricultural systems, drainage canals, and extensive road networks. This transformative find challenges long-held assumptions about ancient Amazonian societies and sheds light on a complex civilization thriving in one of the world’s most biodiverse regions.

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.

Josephine Myrtle Corbin, an American sideshow performer born in 1868, had a rare condition known as dipygus, which caused her to have four legs, each smaller inner leg paired with one of her outer legs. Corbin joined the sideshow circuit, captivating audiences as the "Four-Legged Girl from Texas."

The first person to jump off the Brooklyn Bridge was a professional high diver who "wanted to demonstrate that people did not die simply by falling through the air, thus encouraging people to be willing to jump from a burning building into a net." He proved himself correct by safely falling 135 feet through the air and dying only when he hit the water.

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.

In 1939, George Dantzig arrived late to his statistics class. On the board were two famous “unsolved” problems in statistics written as an example by his professor. Dantzig mistook the examples for homework assignments. He solved the “unsolved” problems and submitted the homework to his professor a few days later. His solutions earned him a doctorate.

On November 22, 1971, DB Cooper hijacked a Boeing 727, drank a whisky, smoked a fag, and then jumped out of the plane with $200,000. He was never again seen.

Philippines is the world’s largest supplier of nurses, supplying roughly 25% of all overseas nurses worldwide.

On August 23, 1989, about 2 million people from Latvia, Estonia, and Lithuania formed a human chain that united all 3 countries to show the world their desire to escape the Soviet Union and the communism that brought only suffering and poverty. This power stretched 600 km.