1

Tri-State tornado

Image: Greg Johnson

In 1925, the Tri-State Tornado carved a path of destruction across Missouri, Illinois, and Indiana. With winds exceeding 300 mph, it remains the deadliest tornado in U.S. history, claiming more than 700 lives and leaving thousands homeless.

This record-breaking F5 tornado—classified as such by modern standards—traveled over 200 miles in just three and a half hours, leveling entire towns. Its unprecedented speed and longevity exposed the limitations of early warning systems, prompting significant advancements in tornado research and forecasting.

2

The Dust Bowl

Image: Sophia Simoes

The 1930s Dust Bowl was a man-made disaster exacerbated by a severe drought across the Great Plains. Decades of over-plowing and unsustainable farming practices had left the farmland highly vulnerable to erosion.

When the drought struck, winds swept loose soil into colossal clouds that darkened cities and devastated remaining crops. These massive dust storms, known as "Black Blizzards," choked the skies and forced thousands of families to abandon their homes . Eventually, the disaster led to significant agricultural reforms under the New Deal.

3

Lake Michigan's seiche wave

Image: Silas Baisch

On the morning of June 26, 1954, a 10-foot-high seiche wave crashed onto the Chicago shoreline , sweeping away eight people and injuring many others. But what exactly is a "seiche wave"?

According to researchers, seiche waves are large, sudden standing waves that form in enclosed bodies of water due to extreme atmospheric changes, such as abrupt shifts in air pressure or strong winds. This rare event shocked the Midwest and prompted scientists to study lake oscillations and their connection to storm systems.

4

Great Alaska earthquake

Image: Joris Beugels

In 1964, Alaska was struck by a devastating earthquake with a magnitude of 9.2, making it the most powerful ever recorded in North America and the second most powerful worldwide. Lasting four minutes and thirty-eight seconds, the earthquake triggered massive tsunamis and landslides across the state, along with significant geographic changes —some coastlines sank while others rose dramatically.

The destruction it caused led to major updates in seismic safety protocols and infrastructure standards throughout the U.S. This event emphasized the need for better preparedness and stricter building codes , to handle similar future events, especially in earthquake-prone areas.

5

Hurricane Katrina

Image: NASA

In 2005, Hurricane Katrina ravaged New Orleans and the Gulf Coast, claiming more than 1,300 lives and leaving millions homeless, sparking an urgent humanitarian crisis. The storm caused an estimated $125 billion in damages, making it one of the costliest hurricanes in history , tied with Hurricane Harvey in the Atlantic basin.

Katrina exposed critical flaws in the region's levee systems and emergency response efforts, prompting widespread criticism and driving essential reforms in disaster preparedness and infrastructure.

6

The Peshtigo firestorm

Image: Tim Mossholder

On the same day as the Great Chicago Fire of 1871, a catastrophic firestorm near the small town of Peshtigo, Wisconsin, scorched approximately 1.2 million acres, making it the deadliest wildfire in recorded history . The uncontrolled blaze claimed over 1,500 lives, though the exact number of fatalities remains uncertain.

Since 1883, there has been speculation that the simultaneous outbreaks of major fires across Illinois, Michigan, and Wisconsin, including the Peshtigo and Chicago fires, were not coincidental but caused by burning fragments from Biela's Comet . However, this theory remains unproven.

7

Superstorm Sandy

Image: Matt Hardy

Nicknamed "Superstorm" by the media, Hurricane Sandy wreaked havoc on the Caribbean and the coastal Mid-Atlantic region of the United States in late October 2012. While it affected 24 states, the most severe damage was concentrated in New Jersey and New York .

The storm caused an estimated $70 billion in damages, flooding New York City's subway system and displacing thousands of residents. It also ignited a nationwide debate about the role of man-made climate change in amplifying the intensity of seasonal storms.

8

Death Valley heatwave

Image: Johannes Plenio

Death Valley recorded the world’s hottest temperature —134°F—in 1913. A testament to America’s climatic extremes, the region’s unique topography traps heat, effectively turning it into a natural furnace.

While the record remains a point of fascination for meteorologists and tourists alike, some recent researchers have challenged the accuracy of the 1913 measurement. Regardless, the region has come close to this temperature in recent years, indicating that a new record-breaking summer may be in the cards.

9

The Great Blizzard of 1888

Image: Jan Canty

The "White Hurricane" of 1888 buried the Northeast under as much as 55 inches of snow, crippling major cities and resulting in over 400 fatalities. Railroads were shut down, and many residents were confined to their homes for up to a week.

As one of the most severe blizzards in American history , the storm compelled New York City to bury power lines and redesign its transportation systems to better withstand future extreme weather events.

10

Mount St. Helens eruption

Image: Tetiana Grypachevska

On May 18, 1980, Mount St. Helens erupted in Washington, triggering massive landslides and pyroclastic flows, killing 57 people and causing over $1.1 billion in damages. The violent blast also reduced the mountain’s height by more than 1,300 feet and sent a plume of ash 80,000 feet into the atmosphere, disrupting air travel for weeks.

This volcanic event, the first in the contiguous United States since the much smaller 1915 eruption of Lassen Peak in California, is considered one of the most disastrous volcanic eruptions in U.S. history. Its aftermath raised awareness of volcanic hazards and underscored the importance of geological research in the country.

1

Blockbuster

During the 1980s and 1990s, Friday night often meant one thing for American families: a trip to Blockbuster. Browsing the aisles for a movie, debating what to watch, and grabbing popcorn at the counter became a weekly routine. But nothing lasts forever.

Born in 1985, Blockbuster conquered the massive home-video market with thousands of stores by the late 1990s and early 2000s, catering to families with at-home VCRs. Then technology changed everything. First came DVD-by-mail services like Netflix, followed by streaming, which left Blockbuster struggling. Late fees and inconvenience only pushed more customers away. The company filed for bankruptcy in 2010. Today, just one official store remains in Bend, Oregon, where visitors still stop by for a dose of the video-store era.

2

Kodak

Back in the day, almost every vacation, birthday, wedding, or holiday gathering seemed to include a Kodak camera, or at least a roll of Kodak film. Founded in 1881, Kodak helped keep the moments that filled family photo albums for generations.

From the 1960s through the 1990s, Kodak dominated the world of film and photography. But that success also made the company slow to accept that technology was changing. Ironically, Kodak helped invent one of the first digital cameras in 1975, yet it hesitated to embrace the future. By the 1990s and 2000s, digital cameras (and later camera phones) quickly replaced traditional film. In 2012, the company declared bankruptcy.

3

Pan Am

Long before flying became an everyday experience, Pan American World Airways, better known as Pan Am, was already carrying Americans across the world. It was founded in 1927, and during the 1960s and 1970s, the airline became a symbol of glamorous air travel.

Its famous blue globe logo was instantly recognizable, even to those who rarely flew. But by the late 1970s, rising competition, fuel costs, and financial troubles began weakening the company. After years of mounting losses and debt, Pan Am shut down in 1991. Even so, its fame was such that even today, more than 30 years later, we still remember it.

4

Woolworth’s

Before Woolworth's made the "five-and-dime" famous, shopping in America looked very different. For decades, Americans visited Woolworth’s for everything from toys and school supplies to household goods and everyday essentials. By the 1960s, the brand had become a familiar part of American life.

Created in 1879 by Frank Winfield Woolworth, the chain grew into one of the country’s largest retailers. But in the 1970s, malls and discount giants like Walmart changed the way Americans shopped, and Woolworth struggled to keep up. By the 1980s, the iconic chain was slowly disappearing. Most stores closed during the 1990s, and the Woolworth retail chain officially ended in 1997.

5

Circuit City

Testing giant stereo systems, browsing rows of CDs and video games, and shopping for the newest TV were all part of the experience at Circuit City, once one of America’s biggest electronics chains.

Founded in 1949 by Samuel S. Wurtzel in Richmond, Virginia, as "Wards Company," the retailer adopted the Circuit City name in 1984. During the 1980s, 1990s, and early 2000s, it became the go-to place for Americans buying a TV, stereo, computer, or any electronic device. But like many companies on this list, Circuit City struggled as shopping habits changed and online stores became more convenient. A controversial 2007 decision to lay off thousands of experienced employees further hurt the company’s reputation. Circuit City couldn’t survive mounting losses and closed all remaining stores in 2009.

6

Borders

Remember Borders? Born in 1971, its huge stores, filled with books, music, magazines, and cozy reading spaces, invited customers to spend entire afternoons there.

During the 1990s and early 2000s, the rise of large shopping malls actually helped Borders thrive, turning its bookstores into popular destinations inside malls across the US. But eventually, the company ran into a challenge it couldn’t overcome: online shopping and digital reading. Competitors like Amazon surged ahead, while Borders struggled to adapt and made costly business decisions, including outsourcing its online sales to Amazon for years. The company collapsed financially in 2011 and soon closed all remaining stores.

7

Bugle Boy

In the late 1980s and early 1990s, teenage fashion became almost synonymous with Bugle Boy. Famous across the country for its casual jeans and memorable TV commercials, the brand became a major part of American mall culture and was sold in department stores nationwide.

But fashion never stands still, and brands have to constantly adapt to survive. By the late 1990s, newer youth-oriented labels had taken over with fresh styles that quickly made Bugle Boy seem outdated. Sales began to fall, and after years of struggling to keep up with changing trends, the company closed its stores in 2001.

8

Howard Johnson’s restaurants

During the 1960s and 1970s, a stop at Howard Johnson's was part of the classic American road-trip experience for many families, and that was no accident.

Founded in 1925 in Quincy, Massachusetts, the famous orange-roofed chain reached its peak when America’s expanding highways and booming car culture made roadside travel more popular than ever. But by the late 1970s and early 1980s, the growing popularity of fast-food chains like McDonald's began changing the way Americans ate on the road. Drivers increasingly wanted meals that were faster, cheaper, and more standardized, while interstate highways also redirected traffic away from many older roadside locations. Unlike some other brands on this list, Howard Johnson’s faded away slowly over the decades. The last restaurant finally closed in 2022.

9

Burger Chef

In 1958, a name emerged as one of the pioneers of America’s growing fast-food industry: Burger Chef. By the late 1960s, the chain had more than 1,000 locations across the country and had become one of McDonald's’s biggest competitors.

Long before Happy Meals became famous, Burger Chef helped popularize the idea of marketing meals directly to children with toys and themed publicity. But during the fast-food wars of the 1970s, competition became fiercer than ever. While McDonald’s and Burger King expanded by leaps and bounds, Burger Chef struggled with financial problems and changing consumer tastes. In 1982, the company was sold to Hardee's, which gradually converted most Burger Chef locations into Hardee’s restaurants.

10

Sports Authority

Throughout the 1990s and 2000s, many Americans looking for running shoes, gym shorts, and sports gear headed straight to Sports Authority.

Known for its huge stores packed with athletic apparel, exercise equipment, bicycles, camping gear, and team sports products, Sports Authority became the ideal shopping destination for families and athletes across the US. But as online shopping rapidly changed retail in the 2000s, the company struggled to adapt. Heavy debt from expansion efforts and a slow shift to e-commerce eventually caught up with the chain. Sports Authority declared bankruptcy in 2016 and closed all remaining stores later that year.

1

What are bills made of?

Unlike other currencies, dollar bills are not made of paper or plastic. U.S. dollar bills are made from a special fabric blend composed of 75% cotton and 25% linen. This mix makes the bills extremely durable and resistant, and they can be folded about 4000 times before tearing.

2

What bills are valid?

Any U.S. dollar bill that was legally printed is valid, no matter how old, as American currency does not have an expiration date. While some bills might not be accepted by businesses of foreign exchange services due to their condition or if they are a discontinued version of the bill, the bills themselves are still valid, and American banks will accept them, though they might take them out of circulation.

3

American leaders

Five bills have a depiction of an American president. The exceptions are the $10 bill, with Alexander Hamilton on the front, and the $100 bill, with Benjamin Franklin. The $1 bill, depicting George Washington, is extremely symbolic: several elements are repeated 13 times as a nod to the thirteen colonies, and it showcases the Bald Eagle and the Eye of Providence as a sign of God watching over America.

4

A change in size

Did you know that dollar bills used to be so big that they were nicknamed "horse blankets"? Original dollar bills were 7.4 × 3.1 inches. In 1929, the Treasury Department reduced the size of bills to 6.14 × 2.61 inches to reduce production costs and materials. Old bills, though still valid, are worth much more as collector items.

5

Uniformity

Besides their value and design, all dollar bills have the same size (6.14 × 2.61 inches), color, and weight (1 gram) , which sets American currency apart from other countries where bills of different values are differentiated by size, color, or both. Why doesn’t the U.S. implement differences among bills? The cost of adapting vending machines, bank drawers, and ATMs to new bill sizes would cost billions of dollars.

6

Hard to copy

Originally, dollars were not green, but black. As time passed, green ink was favored, as it was cheap and did not fade as much as black. The new color also prevented people from using black-and-white cameras to create counterfeit money. Currently, dollar bills are predominantly green, but newer versions also include extra colors, such as pink, orange, or purple.

7

A $100,000 bill?

Have you ever seen a $500 or 1,000 dollar bill? What about a $100,000? Up until 1945, the U.S. Treasury printed $500, $1,000, $5,000, $10,000, and $100,000 notes , in addition to the values currently in use. These higher-value notes were mainly intended for bank and government use, but were sought by criminals as they made it easier to hide large amounts of money. Even though they were officially discontinued in 1969, these notes are still valid, though rare, and they have a high worth as collector's items.

8

No numbers

Unlike bills, American coins have different sizes and colors related to their value. Originally, gold, silver, and copper were used for coins, but modern coins are made of copper, zinc, or nickel. Besides their size and design, the value of each coin is printed in letters, not in numbers , alongside depictions of American presidents.

9

Liberty for all (the coins)

By law, all American coins must include six specific details : the word ‘Liberty’, the name of our country, the national motto "In God We Trust", the oldest American motto "E Pluribus Unum", the value of the coin, and the year. Each coin also includes a mint mark that shows where it was made: "P" for Philadelphia, "D" for Denver, "S" for San Francisco, and "W" for West Point.

10

A global currency

The American dollar is one of the most powerful currencies in the world, acting as a backbone for international trade and finances. It is estimated that two-thirds of the physical dollars in circulation are outside American territory. Besides the U.S. and its territories, eight sovereign nations have the U.S. dollar as their official currency, with several more accepting it as legal tender.