1

New Hampshire: Seat belts are not mandatory

The invention of the seat belt revolutionized automobile safety, and it is not a surprise that it is a legal requirement for driving in the U.S. and many other countries . However, there is a state where it is not a requirement, provided that you are an adult.

Under New Hampshire state law, only minors are required to have a seatbelt —or a safety seat in the case of infants. Adults can do as they see fit in this matter , which follows the state’s stance on personal issues, reflected in its motto "Live Free or Die". However, while you will not be pulled over for driving without a seat belt, it can be used against you in the case of an accident or an injury lawsuit.

2

New Jersey: No pumping your own gas

A few decades ago, New Jersey was no exception in this matter, and it was just one of many states where self-service gas stations were banned due to safety concerns and pressure from full-service station owners.

Most states have repealed the ban since then —Oregon was the last state to do so in 2023; however, New Jersey still requires gas to be pumped by a trained attendant , imposing fines of up to $500 on any customer found pumping their own gas.

3

Nebraska: Unicameral legislature

49 of the 50 states have a government comprised of two chambers, a Senate and a House of Representatives, and the state of Nebraska originally followed the same structure. Still, a mere 50 years after gaining statehood in 1867, Nebraskans had grown tired of both chambers disagreeing on most laws and started pushing for the creation of a unified chamber.

This idea became a reality in 1937, when a referendum abolished the dual-chamber system and established a single-chamber system in its stead. But it was not just that: the newly instituted Nebraska Legislature reduced the number of representatives from 133 to 49 , elected without affiliation to a political party, to ensure that state affairs and interests would be at the forefront.

4

Texas: Right to create new states

Although the federal system gives states the authority to create their own laws and regulations, some major changes, such as a territorial division, require the explicit approval of both the state’s legislature and the U.S. Congress . That is, unless you are the State of Texas.

At the time of Texas annexation in 1845, a special clause regarding this matter was included in the annexation resolution, granting Texas the right to create up to four new states —while maintaining the State of Texas— out of its territory and population without interference from the U.S. Congress, though it would need approval from the state’s legislature. This clause has been invoked several times, citing administrative, political, or economic reasons to divide the territory, but it has never been put to use.

5

Alaska: Annual payment to residents

Out of all American states, Alaska has historically been considered one of the most difficult to live in due to its proximity to the Arctic Circle, its limited daylight, and its isolation. These physical difficulties also result in economic hardships, which means that many Alaskans rely on federal assistance.

In 1976, the state government established the Alaska Permanent Fund Corporation to ensure that residents of Alaska would benefit from the territory’s natural resources. Through this fund, the government invests a percentage of the state oil and mineral royalties and pays permanent residents —children included— an annual benefit. Part of the investment is also used to fund essential public services such as education, infrastructure, and safety.

6

Louisiana: Napoleonic Code system

As a consequence of its past as a British colony, America operates under a common law system . This means that, despite the enactment of new laws, past court and judicial decisions are extremely relevant and create a precedent.

Many states were never part of the British Empire, having belonged to France or Spain in the past, but only one has inherited a different legal system because of it. In the state of Louisiana, civil law is codified following the system of the Napoleonic Code . This means that decisions are not based on judicial precedents, but must follow the systematic laws collected in the code.

7

North Dakota: No voting registration

Voting registration is a huge part of America’s electoral system, with campaigns focusing on registration deadlines and requirements. Although voting is not mandatory, the registration system is intended to ensure that those who desire and are eligible to vote can do so.

The state of North Dakota is the sole exception to this prerequisite, having abolished voting registration in 1951. Does this mean that anyone can vote in North Dakota? Of course not. North Dakotans are required to show proof of ID at the polls before voting . If you have been a resident of the state for more than 30 days and fulfill the general requirements, you can vote.

8

Hawaii: No independent or incorporated cities

Not all American cities work in the same way when it comes to their governments . Cities and towns can be consolidated —meaning the city and county government is the same—, incorporated —having their own government but operating under county law—, or independent —not belonging to a county. Most states have a mix of these, but Hawaii is an exception.

The state of Hawaii is divided into four counties: Honolulu, Maui, Hawaiʻi, and Kauaʻi. While the city of Honolulu has a municipal government, it is a consolidated city, meaning that there are no cities, towns, or jurisdictions in Hawaii that have a government of their own, and all issues, public services, and regulations are handled by the respective county.

9

Washington, D.C.: Laws have to be approved by Congress

Washington, D.C., is unique in itself because it is neither a state nor a territory, despite sharing characteristics with both. As a federal district, Washington, D.C., is part of the U.S. like the states are, but unlike them, it does not have legislative autonomy.

According to the Constitution, the jurisdiction over the city belongs to Congress, making it the de facto legislature of Washington, D.C. After the passing of the 1973 Home Rule Act, the city can elect a mayor and a city council, but all laws and regulations are ultimately subject to approval by Congress.

10

Montana: No "at-will" firing of a permanent employee

Employment laws vary from state to state, except for issues already defined by federal law. Despite the differences, most states follow the "at-will" doctrine, meaning that employers and employees can terminate the employment relationship at any time , for any legal reason, without notice, unless otherwise specified in a contract. While prohibiting discriminatory or unlawful terminations, this mode of employment gives flexibility for everyone involved.

The state of Montana, however, has a different approach to employment. State laws require a probationary period (usually 12 months), during which "at will" principles apply. After this period, employers must provide a "good cause" for termination , such as performance failures, disruption of operations, or other reasonable job-related issues.

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.

1

There's an unexplained billion-year gap

Look closely at the canyon walls, and you'll notice something strange: a clean, sharp line where ancient rock simply stops, and a much younger layer begins directly above it.

This geological puzzle is called the "Great Unconformity," and it represents over a billion years of rock layers that are simply absent , as though that stretch of time never happened. In some spots, rock dated 1.8 billion years old sits directly beneath rock that is only 520 million years old. Where did the missing billion years go?

The leading theory involves the violent breakup of an ancient supercontinent, but scientists are still piecing it together.

2

During the Cold War, it hid a nuclear fallout shelter

During the Cuban Missile Crisis in 1962, the U.S. government converted part of the Grand Canyon Caverns into a fallout shelter. This dry cave system, more than 200 feet underground, was stocked with enough food and water to sustain 2,000 people. Naturally, it was never occupied, and the supplies were never used.

The caverns have since been transformed into a tourist attraction, with organized tours winding through the same underground chambers that were once intended as a refuge from nuclear war. You can even book a night's stay there.

3

The Federal Aviation Administration was founded after a crash over the canyon

In 1956, two commercial passenger planes collided in midair over the eastern Grand Canyon, killing all 128 people on board both crafts. Rescue teams struggled to reach the wreckage deep inside the canyon, and the extreme heat of the crash had caused the planes' aluminum to fuse with the bedrock. There were no survivors.

The disaster exposed a terrifying truth: the U.S. air traffic control system was dangerously outdated, relying on pilots' visual estimates and rough guesswork from controllers , with no way to separate fast-moving aircraft from slow ones, or instrument-flying planes from those navigating by sight. Congress responded by passing legislation that created both the Federal Aviation Administration (FAA) and the National Transportation Safety Board.

4

A hoax suggested that an Egyptian civilization had lived there

In 1909, the Arizona Gazette reported that an explorer named G. E. Kinkaid had discovered a vast underground citadel inside the canyon, filled with artifacts linked to ancient Egyptian civilization. He even claimed the expedition had been funded by the Smithsonian.

This story described hieroglyphics on the walls, mummies in the chambers, and relics pointing to a direct connection with the Egypt of the pharaohs. It was incredibly detailed, and it was, of course, a hoax. No evidence for any of Kinkaid's claims ever surfaced.

5

Fewer than 100 people have ever hiked its full length

Among the few people who have completed the through-hike of the Grand Canyon is Jen Hogan, the first woman to accomplish it, finishing her journey in 2021–2022.

It’s a full 800-mile length below the rim. The route involves extreme heat, flash floods, near-impassable areas, and stretches with no water or trail whatsoever. Around 60 or 70 people have reportedly accomplished it. This makes it one of the most exclusive feats on Earth.

6

The Grand Canyon's rocks predate dinosaurs entirely

Visitors scanning the canyon walls for fossils are often surprised to learn they won't find any dinosaur bones here. The rock layers of the Grand Canyon are simply older than dinosaurs. This fact alone can be shocking: staring at its walls means staring at marine fossils from as far back as 1.2 billion years ago. Some of its caves hold the remains of ancient mammals. The canyon is a window into a world that existed long before the dinosaurs, when the land that is now Arizona lay beneath a shallow sea.

7

The park is bigger than Rhode Island

Numbers alone rarely capture the Grand Canyon's scale, so here's a different approach. Rhode Island covers about 1,214 square miles, and the Grand Canyon National Park spans 1,904 square miles.

The canyon's depth exceeds four Empire State Buildings (which is 1,454 feet) stacked on top of one another. That’s 6,093 feet at its deepest point.

8

But it's not the deepest canyon on Earth

For all its grandeur, the Grand Canyon does not hold the depth record. Pictured above, the Yarlung Tsangpo Grand Canyon in Tibet, China, plunges to 17,567 feet, which is nearly three times deeper. Carved by the Yarlung Tsangpo River as it cuts through the eastern Himalayas, that canyon is so remote and extreme that it remained largely uncharted until the late 20th century.

9

It is home to a pink rattlesnake found nowhere else on Earth

The Grand Canyon Pink Rattlesnake has a pinkish-red coloring that matches the canyon's own distinctive rock walls so closely that it's nearly invisible. It is found nowhere else in the world. Officially classified as Crotalus oreganus abyssus , it has darker diamond-shaped markings along its back that deepen the camouflage further.

10

There's a village at the bottom: Supai Village

For over 1,000 years, the remote village of Supai has been home to the Havasupai Tribe, the People of the Blue-Green Waters. It is located an eight-mile hike from the rim, but sits roughly 3,000 feet deep inside the Grand Canyon.

The U.S. Department of Agriculture has called it the most remote community in the contiguous United States, and it has no automobiles and no road access. The only ways in are on foot, by mule, or by helicopter. It is also the only place in the United States where the postal service still delivers mail by mule train.