1

The Simpsons

The Simpsons , created by Matt Groening, premiered on Fox in 1989, starring a new family that defied conventional, picture-perfect TV norms.

Instead, an imperfect and dysfunctional family appeared — and because of that, they were relatable in profoundly new ways . The Simpsons was also a pioneer in adult animation, allowing children to follow the story while including complex political and social satire for adults. It not only coined permanent catchphrases but also had a surprising ability to predict world events.

2

The Sopranos

The Sopranos, created by David Chase, debuted on HBO in 1999. It followed the life of Tony Soprano (played by the late James Gandolfini) and his struggles as a mobster and the patriarch of his dysfunctional suburban family , all analyzed by his psychiatrist, Dr. Jennifer Melfi (Lorraine Bracco).

This show was radical because, unlike previous protagonists, the central figure Tony was deeply flawed and often unlikable, paving the way for more anti-hero protagonists like Walter White and Don Draper. Alongside its complex and ambiguous morality, the cinematography of the show began to rival that of Hollywood movies.

3

Lost

Lost , created by J.J. Abrams, Damon Lindelof, and Jeffrey Lieber, premiered on ABC in 2004, before streaming existed. The story follows the crash of Oceanic Flight 815 on a very peculiar tropical island. It kicked off as a gritty and character-driven survival story that eventually evolved into a sci-fi and mythological epic.

It was revolutionary because it introduced the "mystery box" trope, proposing complex questions and dropping clues that kept viewers hooked and constantly theorizing — arguably inventing modern, interactive TV fandom.

4

Sex and the City

Created by Darren Starr, Sex and the City, which premiered in 1998 on HBO, changed the cultural narrative around women’s roles through the lives of four female friends (led by Sarah Jessica Parker’s Carrie Bradshaw) living and working in New York City.

It was the first mainstream hit that featured women talking frankly about sex and sexuality — and proposed that female friends can be soulmates, and that those relationships can take precedence over romantic, marital ones. Rejecting outdated "traditional" roles, the show also destigmatized being single and childless, and instead embraced female financial independence, celebrating women who focused on their careers and personal development in their 30s and 40s.

5

CSI: Crime Scene Investigation

CSI, created by Anthony E. Zuiker and which premiered on CBS in 2000, followed the lives and work of a team from the Las Vegas Police Department (LVPD), led by Dr. Gil Grissom (William Petersen), who meticulously collected evidence to solve cases.

It shifted the focus for the first time from police and detective work on the streets to the indoor, behind-the-scenes dynamics of interrogations, forensics, and high-tech lab analysis. It also popularized the concept of "nerd squad", making lab and microscope analysis cool for the first time .

6

The X-Files

The X-Files, created by Chris Carter, premiered in 1993, and introduced a structure where each episode was a stand-alone story known as a "monster of the week," while also being part of an overarching mythic story that included government alien conspiracy theories and supernatural events.

This show flipped gender roles completely: the main female character, Agent Dana Scully (Gillian Anderson), was the intelligent and assertive medical doctor (inspiring many women at the time to pursue STEM careers), and the lead male character, Agent Fox Mulder (David Duchovny), was the intuitive and instinct-driven character.

7

Breaking Bad

Breaking Bad, created by Vince Gilligan, premiered in 2008 and is considered by many to be the ultimate catalyst that transformed television into a cinematic experience, elevated serialized storytelling, and, once it became available on Netflix, popularized the binge-watching model so common today .

Another crucial aspect was the main character: Walter White (Bryan Cranston) changed from a sympathetic, cancer-stricken high school chemistry teacher to the ultimate drug lord villain. Before this show, characters rarely evolved; instead, here the audience became especially invested in Mr. White’s persona.

8

Mad Men

Mad Men , created by Matthew Weiner and airing on AMC from 2007 to 2015, centered on the professional and personal lives of advertising executives, including protagonist Don Draper (Jon Hamm), on Madison Avenue in New York City in the 1960s. It was the first basic cable series to win an Emmy Award for Outstanding Drama Series .

It revolutionized television at the time by proving that a sophisticated, slow-burning script with literary character development (including some of the best-written dialogue on television ever) could work. The show was also committed to historical accuracy and meticulous set design, raising the bar for visual and thematic storytelling.

9

Law & Order

Law & Order, created by Dick Wolf, premiered on NBC in 1990, flipping the usual crime drama formula on its head — splitting episodes into a two-part structure, presenting a police investigation, followed by a courtroom prosecution .

Therefore, it prioritized legal procedures over emotional drama, and the cases became the main character, presenting the difficulties and nuances of the criminal justice system, instead of the usual black-and-white representation of justice. With new episodes still airing (following a 2010-2022 hiatus), Law & Order remains one of the most successful series in TV history, launching numerous spinoffs including the popular Law & Order: SVU.

10

Grey’s Anatomy

Grey’s Anatomy, created by Shonda Rhimes, aired on TV for the first time in 2005 and became the longest-running American primetime medical series ever. It centers on a hospital in Seattle and follows surgical residents as they become surgeons, while balancing intense life-and-death emergencies with complex personal life stories .

Most notably, the series created what was described as "Grey’s Effects": the approach to joyful and defiant female sexuality and to women unapologetically taking up space in a male-dominated professional field; it even shaped medical school applications and improved the public's understanding of real-world health issues.

11

The Wire

The Wire was created by former police reporter David Simon and detective Ed Burns, and is considered by many to be one of the greatest shows ever made , airing on HBO from 2002 to 2008. It is a drama series that analyzes the systemic issues Baltimore faces, examining a different institution in each of its five seasons.

Originally pitched as the "anti-cop show," it showed police departments slowed down by piles of bureaucracy, where chasing arrests became more important than actually solving crimes or improving lives. In addition, the city was the main character, portrayed as a gray, morally complex world.

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.