1

​Miranda v. Arizona (1966)

Every legal TV drama has a "You have the right to remain silent" moment. But that phrase actually became part of American culture thanks to a Supreme Court ruling. In 1963, American laborer Ernesto Miranda was arrested in Phoenix, Arizona, and questioned by police for several hours about a kidnapping and assault case. During the interrogation, officers did not tell him he had the right to remain silent or the right to speak with a lawyer. Miranda eventually signed a confession that was later used to convict him at trial.

His lawyers appealed, arguing that he had not been properly informed of his constitutional rights. In a narrow five-to-four ruling, the Supreme Court agreed. Chief Justice Earl Warren explained that police interrogations place heavy pressure on suspects, making safeguards necessary. The Court ruled that suspects must be informed of their rights before questioning begins. Today, the Mirada Rights warning is one of the best-known legal protections in the U.S.

2

​Brown v. Board of Education (1954)

For many decades, racial segregation in public schools was considered legal under the doctrine "separate but equal." In reality, schools for Black children were often underfunded and unequal in nearly every other way. The issue came to a head in Topeka, Kansas, when Oliver Brown tried to enroll his Black daughter Linda in a nearby white elementary school. She was denied admission because of segregation laws.

Brown joined other families in challenging school segregation with support from the National Association for the Advancement of Colored People, NAACP, whose legal team was led by Thurgood Marshall. The Supreme Court heard arguments from several related cases and faced enormous pressure because of the issue’s national importance. In 1954, Chief Justice Earl Warren delivered a unanimous decision declaring that separate educational facilities are inherently unequal. The ruling overturned earlier legal precedent and became one of the most important decisions in American history, helping launch the modern Civil Rights Movement.

3

​Tinker v. Des Moines (1969)

During the Vietnam War, protests and political debates spread across the country, including in public schools. In 1965, a group of students in Des Moines, Iowa, decided to wear black armbands to school to protest the war and support a Christmas truce. School officials quickly announced that students wearing the armbands would be suspended. Mary Beth Tinker and her brother John wore the armbands anyway and were suspended from school. Their family challenged the decision, arguing that the students’ First Amendment rights had been violated.

The case eventually reached the Supreme Court, which ruled seven to two in favor of the students. In 1969, Justice Abe Fortas wrote that students do not lose their constitutional rights when they enter a school building. The Court concluded that schools may only limit student expression if it seriously disrupts learning. The ruling became a major precedent protecting peaceful expression in public schools.

4

​Roe v. Wade (1973)

Before Roe v. Wade, abortion laws differed greatly from state to state, and many states severely restricted access to the procedures. The case began when, in 1969, a Texas woman, Norma McCorvey, challenged state laws under the pseudonym "Jane Roe." Texas only allowed abortions in cases where the mother’s life was in danger. Roe argued that the law violated constitutional protections for personal privacy.

The Supreme Court heard the case during a period of growing national debate over reproductive rights and government authority. In 1973, the Court ruled seven to two that the Constitution protects a woman’s right to privacy under the Fourteenth Amendment, including certain decisions about abortion. The justices created a legal framework balancing individual rights with state interests. Roe v Wade continued to be one of the most debated decisions in history. It was overturned by the Supreme Court in 2022 via the Dobbs v. Jackson Women's Health Organization case, which eliminated the federal constitutional right to an abortion and allowed individual states to set their own abortion laws.

5

​Regents of the University of California v. Bakke (1978)

Inequality based on race took all kinds of forms, and school desegregation was just the beginning of a long pursuit of justice and equality. As universities sought to address racial inequality in higher education during the 1970s, affirmative action policies became the subject of national debate. Alla Bakke, a white 30-year-old engineer from California, applied to the medical school at the University of California, Davis, and challenged its admissions program after being denied entry.

Bakke argued that the school’s racial quota system violated the Equal Protection Clause. In 1978, the Supreme Court ruled that strict racial quotas were unconstitutional, but also said race could still be considered as one factor among many in admissions decisions. The ruling shaped college admissions policies for decades. In 2023, however, the Court overturned much of that framework, via Students for Fair Admissions, Inc. v. Harvard College, ruling that race-conscious admissions programs at Harvard and the University of North Carolina violated the Constitution, bringing a major chapter of the affirmative action debate to a turning point.

6

​Gideon v. Wainwright (1963)

Before 1963, many Americans accused of serious crimes had no guaranteed right to a lawyer if they couldn’t afford one. Clarence Earl Gideon, an impoverished Missourian drifter, learned this firsthand after being charged with burglary in Florida. Too poor to hire an attorney, Gideon asked the court to appoint one for him, but the request was denied because state law only required lawyers in death penalty cases.

While incarcerated, he sent a handwritten petition to the Supreme Court arguing that his constitutional rights had been violated. The Court agreed to hear the case and ruled unanimously in his favor. The Justices declared that the Sixth Amendment guaranteed the right to legal counsel in serious criminal cases and that states must provide attorneys for defendants who cannot afford them. The ruling greatly expanded protections for ordinary citizens in the criminal justice system.

7

​Schenck v. United States (1919)

During WWI, the U.S. government became increasingly concerned about opposition to the military draft. Charles Schenck, a leader in the Socialist Party, distributed pamphlets encouraging drafted men to resist military service peacefully. He was arrested under the Espionage Act of 1917 and argued that his actions were protected by the First Amendment. But the Supreme Court didn’t see it that way.

Justice Oliver Wendell Holmes Jr. explained that free speech rights are not unlimited, especially during wartime. In one of the most famous lines in Supreme Court history, Holmes stated that the law would not protect someone falsely shouting "fire" in a crowded theater and causing panic. The Court created the "clear and present danger" test, allowing the government to limit speech that creates an immediate threat to public safety or national security. The ruling became an important balance between civil liberties and public protection.

8

​McCulloch v. Maryland (1819)

In the early years of the U.S., many Americans still viewed their states almost like separate countries. After the War of 1812, in 1816, the federal government created the Second Bank of the United States to help stabilize the economy. Several states opposed the national bank, including Maryland, which placed a heavy tax on it. James McCulloch, who worked at the Baltimore branch of the federal bank, refused to pay the tax , and the dispute reached the Supreme Court.

In 1819, Chief Justice John Marshall ruled that Congress had the authority to create the bank, even though the Constitution did not specifically mention national banks. He explained that the Constitution gives the federal government certain implied powers needed to carry out its duties. The Court also ruled that states could not tax federal institutions. The decision strengthened federal authority and helped create a more stable national economy at a time when the young country was still finding its footing.

9

​Gibbons v. Ogden (1824)

In the 1820s, steamboats were transforming transportation and trade across the U.S. New York granted a monopoly, giving certain operators exclusive rights to run steamboats on its waters. Aaron Ogden operated a ferry service between New York and New Jersey under that monopoly. Thomas Gibbons began running a competing ferry service using a federal license, leading to a major legal battle. The case raised an important question: Could individual states control interstate trade, or did that authority belong to the federal government?

In 1824, the Supreme Court ruled in favor of Gibbons. Chief Justice John Marshall declared that Congress alone has the power to regulate interstate commerce. The Court also defined commerce broadly to include navigation and transportation. The ruling prevented states from blocking trade across borders and helped create the open national economy Americans know today, making travel and business between states far easier and more consistent.

10

​Marbury v. Madison (1803)

Every time Americans expect the Constitution to protect their rights, they are relying on a principle established in Marbury v. Madison. Before 1803, nobody was entirely sure who had the final authority to decide whether a law violated the Constitution. That question arose during a tense transfer of power between Presidents John Adams and Thomas Jefferson. In his final hours in office, Adams appointed several judges, including Maryland businessman William Marbury. Some appointment papers were never delivered before Jefferson took office, and he ordered his brand-new Secretary of State, James Madison, not to hand them over to the appointees.

Marbury sued, asking the Supreme Court to force Madison to deliver the documents. Chief Justice John Marshall ruled that Marbury deserved the position, but the law allowing the Court to hear the case directly was unconstitutional. In doing so, Marshall established judicial review, giving the Supreme Court the power to strike down laws that conflict with the Constitution.

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.