1

The spacesuit satellite

Image: Sieuwert Otterloo

Shoving an astronaut suit out of an airlock and into space might seem like a scene from a movie, but it really happened. In 2003, an empty spacesuit was thrown into space , nicknamed Ivan Ivanovitch (or Mr. Smith), stuffed with old clothes and a radio transmitter .

The idea was that old spacesuits could be used as satellites. SuitSat-1, as it was named, went on to spend several months in silent orbit before entering Earth's atmosphere and burning up on September 7, 2006.

2

The "invisible" gorilla

Image: Mike Arney

In this strange psychological experiment, researchers asked participants to watch a video of people passing a basketball and count how many passes were made. The catch was that, during the video, a person in a gorilla suit walked into the frame, stopped to pound its chest, and then walked out.

The study revealed a curious phenomenon known as "inattentional blindness": people were so focused on counting the passes that they failed to notice the gorilla .

3

Space spiders

Image: Vidar Nordli-Mathisen

In 2011, scientists sent two golden silk orb-weaver spiders on a 45-day trip aboard the ISS. They were kept in an adequate habitat, and both spiders adapted beautifully, continuing to spin their webs and hunt for food.

But not everything was normal. In microgravity, the spiders spun their webs differently —flatter and rounder—compared to the more three-dimensional, asymmetrical structures that orb-weavers spin on Earth.

4

Bitter fingernails

Image: Nick Karvounis

In 1942, a professor conducted an experiment with boys who had been diagnosed as chronic nail-biters. He used a phonograph with the recorded message " My fingernails taste bitter ," playing it over and over at night in the room where the boys slept.

At the end of the summer, the professor examined the boys' nails and concluded that 40% of them had kicked the habit.

5

Syrup swimming

Image: Arwin Neil Baichoo

In 2004, sixteen people with varying swimming skills swam in both a regular pool and a pool of guar syrup , which is twice as thick as water, for an experiment conducted by the University of Minnesota. The differences in their recorded times were negligible.

6

Bearcats and popcorn

Image: Corina Rainer

People encountering bearcats have noted that these animals smell like movie theater popcorn. A non-profit organization tested the bearcat's urine , and the results showed the presence of a chemical compound called 2-acetyl-1-pyrroline.

As it turns out, this is the same compound that gives popcorn its signature smell .

7

The 28-hour day

Image: Ocean Ng

Hoping to find out whether the 24-hour sleep-wake human rhythm was merely a habit, two scientists spent 32 days in a cave to avoid any external reference to day and night.

They tried out a 28-hour day, sleeping for 9 hours, working for 10 hours, and having 9 hours of leisure time . The younger scientist adapted within the first week, while the older one failed to adapt.

8

The fake doctor

Image: Hunters Race

A fake doctor delivered a lecture in 1970 to a crowd of assembled experts titled "Mathematical Game Theory as Applied to Physician Education." His performance impressed the audience so much that nobody noticed he was an actor who didn’t know anything about game theory.

The researchers behind the experiment wanted to find out if a great delivery technique could fool a group of experts—and it did.

9

The electric kite

Image: Brett Wharton

The most famous experiment on our list is also one of the strangest. In 1752, Benjamin Franklin flew a kite in a thunderstorm to demonstrate the electrical nature of lightning .

While many believe otherwise, no lightning hit the kite. Instead, ambient electrical charge moved through the hemp wire, and when Franklin touched the key attached to the wire, he felt a spark, thus proving the existence of such electricity.

10

Moon trees

Image: David Dibert

As we've learned, Americans like taking things to outer space and then bringing them right back. The Apollo 14 mission carried hundreds of tree seeds into space . These "moon trees" were then planted across the country by the US Forest Service.

Unsurprisingly, the trees grew just like any other tree of the same species.

1

Althea Gibson

Image: Josephine Gasser

Born in 1927, Althea Gibson was an American tennis player and a professional golfer. As a sportswoman her ability was extraordinary, but her major achievement was breaking the color barrier in tennis in the 1950s.

Althea was the first African-American woman to play the U.S. National Championships and the first black woman to win a Grand Slam in 1956.

She won 11 Grand Slams, five singles titles, five doubles, and one mixed doubles title. And she opened the door for other black sportswomen to be under the spotlight. Quite impressive, right?

2

Eleanor Roosevelt

Image: René DeAnda

If aviation or sports were controversial places for women, imagine politics! But that didn’t stop Eleanor Roosevelt, a key figure in American politics .

As Franklin D. Roosevelt’s wife, who presided over America from 1933 to 1945, Eleanor was the longest-serving first lady of the United States and, as such she was unwaveringly committed to the people. She redefined the concept of the first lady.

She advocated for human rights and social justice and used her position to work for women, African Americans, and the impoverished. And to top it all, she was a central figure in drafting the Universal Declaration of Human Rights.

3

Amelia Earhart

Image: Tomas Martinez

Even if she was born in 1897, Amelia is considered a key figure of the 20th century because she was an aviation pioneer . As such she broke several records: She was the first woman to fly solo across the Atlantic and the first to promote commercial air travel.

But that wasn’t all, Amelia was an activist for women’s rights and wrote best-selling books narrating her adventures as a pilot. The mysteries behind her disappearance during her flight across the Pacific only made her a bigger icon.

4

Estée Lauder

Image: Towfiqu barbhuiya

Most of the professions held by the women in this article are accepted for women today, but not so long ago, being a woman and a successful businessperson wasn’t very common: That was the case with Estéé Lauder who launched her eponymous cosmetics company with her husband.

The brand's success never went unnoticed and it is a best-selling company in the present world. But to top her achievements, Lauder was listed as one of the 20 most influential businesspeople of the century!

5

Aretha Franklin

Image: Alberto Bigoni

During the 20th century, the music industry has seen some of the best singers and songwriters of all time. America has no shortage of talented musicians, but being named the Queen of Soul is something else altogether!

Aretha was a black singer, songwriter, and pianist, and her music gained her the Rolling Stones magazine recognition of "Greatest Singer of All Time" not once, but twice! Not to mention the 18 Grammy Awards or the Presidential Medal of Freedom, among other acknowledgments.

Her music has inspired millions of people around the world and it is still a reference in music and culture today.

6

Marilyn Monroe

Image: Jarvik Joshi

Marylin doesn’t need any kind of introduction, does she? She was and still is to this day a pop culture icon. Her work as an actress had a massive impact on the entertainment industry, but her work as a model did something else to the fashion industry: She was known as the "blonde bombshell" and gave birth to a true revolution in terms of body shapes, relationships, and more.

Influential and controversial depending on who talked about her, she was living proof that there is no such thing as bad marketing: All things considered, she still was the best-paid Hollywood actress of the time.

7

Helen Keller

Image: Aaron Burden

Keller’s story is both shocking and inspiring at the same time. At only 19 months of age, Hellen lost her sight and hearing due to an illness. But having a rough childhood never stopped her. Instead, and despite her disability, she became an advocate for the rights of disabled people, a political activist, and a lecturer.

She wrote 14 books, and hundreds of speeches and fought for women’s right to vote, labor rights, and world peace. If you want to be inspired by her story, you can read her autobiography The Story of My Life .

8

Julia Child

Image: Alyson McPhee

French cuisine is exquisite and we’ve got Julia Child to thank for the fact that we Americans know about it. Child revolutionized American cooking by bringing French cuisine to America through her cookbook Mastering the Art of French Cooking and her television show "The French Chef."

In her TV show, Child taught French cooking techniques in a way that is accessible to everyone. She was approachable and enthusiastic which made her an influential figure beyond the kitchen, she was a cultural icon.

9

Toni Morrison

Image: Olga Tutunaru

In the field of literature, Morrison is our chosen one since she was a true giant. Toni Morrison wrote novels that deeply influenced American literature and culture as well.

Her writing made her the first African American woman to receive the Nobel Prize in Literature. In her novels, like Beloved, Sula, and Song of Solomon , Morrison explores the topics of identity, race, history, and heritage. Her characters offer deep insights into the African American experience and humanity which makes her legacy an everlasting one.

10

Rosa Parks

Image: Ant Rozetsky

No article about influential women of the 20th century would be complete if we didn’t mention Rosa Parks.

In 1955, she refused to give her seat on a bus to a white passenger. Her courageous act of defiance sparked the Montgomery Bus Boycott and initiated the modern Civil Rights Movement. With a simple, but huge action, she challenged the whole system of racial segregation and inspired a nationwide movement for equality.

The bus boycott was the beginning, yet her work continued beyond that as she fought tirelessly for civil rights for the rest of her life.

1

Beaver – Oregon (reverse)

Image: Makaristos, Public domain, via Wikimedia Commons

As you’d expect from the Beaver State, this rodent appears on Oregon’s flag. The thing is, you just can’t see it here because it’s on the reverse side! That’s right, Oregon is the only state with designs on both sides of the flag. But why that animal? In the 19th century, the beaver fur trade played a key role in Oregon’s economic growth, forever linking this clever creature to the state’s identity.

2

Bear – California

Image: Drei Kubik

When you think of grizzly bears, California is probably the first state that comes to mind, and for good reason. Its flag is one of the most recognizable in the country. Grizzlies once roamed the region, and although they’re now extinct in the state, the animal lives on as a symbol. Back in the 1840s, American settlers pushing for independence from Mexico raised a flag with a grizzly and a star to mark their revolution. The design has evolved since then, but the iconic bear remains!

3

Bison – Wyoming

Image: Tony Webster, CC BY 2.0 <https://creativecommons.org/licenses/by/2.0>, via Wikimedia Commons

As one of the few places where American bison have roamed freely for centuries, it’s no surprise that this animal was chosen to represent the state of Wyoming. At the center of its flag, the white silhouette of the bison (often called a buffalo) features Wyoming’s coat of arms, which honors the state's key industries: livestock, mining, grain, and oil.

4

Bees – Utah

Image: JohnnyAstros, CC BY-SA 4.0 <https://creativecommons.org/licenses/by-sa/4.0>, via Wikimedia Commons

The new Utah flag, adopted in 2024, has a peculiar and modern design. The main characters in this story are none other than bees. Or, actually, a beehive, which was chosen to symbolize community, cooperation, and the hard work that reflects Utah’s industrial spirit.

5

Badger – Wisconsin

Image: Kenneth C. Zirkel, CC BY-SA 4.0 <https://creativecommons.org/licenses/by-sa/4.0>, via Wikimedia Commons

See that small yellow-and-brown figure above the shield on Wisconsin’s flag? Although many people don't notice it, that’s a badger, the state animal. But why a badger? Back in the 1800s, the first lead miners who worked in southern Wisconsin used to live in hillside tunnels during the winter, which resembled badger burrows. These workers were the first to be given the nickname, which was later transferred to the state.

6

Deer and cow- Vermont

Image: Tablelegs6, CC0, via Wikimedia Commons

The Vermont flag has plenty to see, but the most striking feature is the deer head that tops the shield. With deer abundant throughout the state, it was chosen to represent all of Vermont’s wildlife. But what about the cow? Tucked inside the shield, this small figure symbolizes the state’s dairy and agricultural industry.

7

Horse – New Jersey

Image: Public domain, via Wikimedia Commons

As part of the state coat of arms, a horse appears atop the beautiful New Jersey state flag. As in many other regions, horses were vital to New Jersey’s colonial economy, playing a key role in agriculture. For that reason, in 1777, the coat of arms’ designer placed the horse at the top, symbolizing both strength and the speed of the state’s growth. On both sides of the shield are two women: Liberty and Ceres, the Roman goddess of agriculture, honoring the state motto, "Liberty and prosperity."

8

Moose/Elk – Michigan

Image: Tony Webster, CC BY 2.0 <https://creativecommons.org/licenses/by/2.0>, via Wikimedia Commons

A moose and an elk seem like great choices for offering support, don’t they? That’s exactly what the designers of Michigan’s flag and coat of arms thought. These two majestic animals appear standing on their hind legs, as if holding up the shield. Both native to the state, they symbolize Michigan’s abundant wildlife and natural resources.

9

Pelican – Louisiana

Image: Public domain, via Wikimedia Commons

Although the pelican on Louisiana’s state flag is white, its actual name is "brown pelican", a species that abounds along the state’s coast. On both the flag and the coat of arms, the bird is shown wounding itself to feed its young; a strong symbol of devotion and sacrifice that reflects Louisiana’s motto: "Union, Justice, and Confidence."

10

Bald Eagle – Many

Image: Alexas_Fotos

We saved the unmistakable bald eagle for last. Native to North America, this majestic bird has become a symbol of the United States, representing strength, courage, freedom, and longevity. But the eagle isn’t just on the national coat of arms; it also appears on many state seals and flags, including Illinois, Iowa, Michigan, Missouri, New York, North Dakota, Pennsylvania, and Utah’s historic flag.