1

Ancient origins

Image: Ameer Basheer

The Grand Canyon isn’t just old—it’s millions of years older than previously thought. Some rock layers at the bottom date back 1.8 billion years, nearly half the age of Earth itself. While the canyon itself is around 5 to 6 million years old, recent studies suggest parts of it began forming 70 million years ago—during the dinosaur era.

2

Once an ocean floor

Image: Yannis Papanastasopoulos

Long before it was a canyon, this region sat beneath an ancient sea. The Kaibab Limestone, the canyon’s top layer, formed from marine fossils left behind as the waters receded 270 million years ago. The presence of coral, shellfish, and even shark fossils proves the area was once home to a thriving ocean ecosystem.

3

Carved by more than water

Image: Wolfgang Hasselmann

While the Colorado River played a huge role in shaping the canyon, other forces were at work. Volcanic activity, tectonic uplift, and even landslides helped carve out its immense depths. Lava flows from nearby volcanoes poured into the canyon, creating layers of rock that tell the story of violent geological change.

4

The earliest human inhabitants

Image: Russ McCabe

Humans have lived near the Grand Canyon for at least 12,000 years. The earliest known inhabitants were Paleo-Indians, who left behind stone tools and spear points. Later, the Ancestral Puebloans built cliff dwellings and left behind intricate pottery, proving that this seemingly inhospitable land was once home to thriving communities.

5

First European encounter

Image: Antoine Vidal de La Blache

Spanish explorer García López de Cárdenas was the first European to lay eyes on the canyon in 1540. Sent by Francisco Vázquez de Coronado in search of legendary cities of gold, he and his men were shocked by its vastness. They tried to climb down for water but failed, unable to comprehend its sheer scale.

6

Named a national monument

Image: Benjamin Cutting

President Theodore Roosevelt designated the Grand Canyon a national monument in 1908, calling it a place "every American should see." He was instrumental in protecting it from commercial exploitation, setting the stage for its eventual National Park status in 1919.

7

Hidden caves

Image: Russ McCabe

The Grand Canyon contains over 1,000 caves, but fewer than 400 have been explored. Some remain completely untouched, preserving prehistoric fossils and evidence of ancient human life. Today, only one cave is open to the public—Grand Canyon Caverns, located nearby in Arizona.

8

Phantom ranch

Image: Annie Spratt

Built in the 1920s, Phantom Ranch remains one of the most isolated lodges in America. Located at the bottom of the canyon, it’s only accessible by hiking, mule ride, or rafting. Due to high demand, reservations are awarded through a lottery system.

9

America’s first canyon explorer

Image: Alex Moliski

John Wesley Powell led the first recorded expedition through the Grand Canyon in 1869. With one arm lost in the Civil War, he braved the Colorado River’s treacherous rapids in wooden boats. His journey mapped the canyon’s uncharted territory, proving it wasn’t an impassable wasteland but a geological treasure trove.

10

Forgotten civilizations?

Image: Otacilio Maia

In the 1930s, explorer Emery Kolb uncovered a sealed cave in the canyon containing ancient artifacts and human remains. Some speculated it belonged to a lost civilization, but archaeologists determined it was a prehistoric Native American site. The canyon still holds thousands of undiscovered archaeological sites, adding to its mystery and historical significance.

1

World's largest office building

Image: Clem Onojeghuo

Among its many record-breaking achievements, America has one lesser-known record that also deserves attention.

Our country is home to the largest office building in the world. Want to know which one? The world's largest office building by floor area is the United States Department of Defense, also known as the Pentagon.

Ok, but how big is it? Located in Arlington, Virginia, and famous not only for its size but also for its distinctive five-sided design, the building has a total floor area of approximately 6.5 million square feet.

2

People in New York

Image: Nicolai Berntsen

We all know that New York City is packed with people. In fact, it's the most populous city in our country. But how many live there?

As of 2024, around 8.8 million people call NYC their home. That's a huge number on its own, but it might be even more impressive when you consider that NYC's population surpasses that of 40 US states, including Montana, New Hampshire, and Mississippi, to name a few. In other words, NYC has more residents than each of those 40 states individually.

After all, New York City is famously known as "the city that never sleeps" for a reason!

3

Many versions of the flag

Image: Chris Hardy

The US flag is one of our most beautiful and beloved symbols and also one of the most recognized worldwide. With its distinctive stripes, stars, and classic red, white, and blue colors, it is an unmistakable icon. But did you know it has undergone several changes over the years?

The US flag has not just had 1, 2, or 3 versions; in fact, there have been 27 official versions! Each of these versions served an important purpose, reflecting some key changes throughout our history. For example, whenever a new state joined the Union, an additional star was added. This is how we arrived at the 50 white stars you see in the upper left corner of our beautiful flag. The current version was made official on July 4, 1960.

4

No official language

Image: Ben Duchac

While English is the most widely spoken language in the United States, the country does not have an official language at the federal level.

This might surprise some people, given that English is the primary language for most Americans and is used for government and legal purposes.

On the other hand, many other languages are spoken here as well. For instance, Spanish is the second most spoken language, though it is used considerably less than English. And that's not all; Chinese, Filipino, and French also have a notable number of speakers in the US!

5

The fastest-speaking states

Image: Chris Liverani

We all have that friend who speaks so fast it's hard to keep up, even if you know them well. Would you like to know how fast Americans speak?

Fortunately, there's not just data on the languages we use but also on how quickly we speak in our daily lives. And it turns out that a few states lead the pack in this speed race.

According to the Smithsonian Institution, Oregon, Minnesota, and Massachusetts are the states where residents speak the fastest . So, if you know someone from those states, why not give it a try and see if you can keep up with their speedy conversations?

6

Most airports in the world

Image: Alex Underwood

Americans seem to love air travel, and there's a good reason for that: the US holds the record for the most airports in the world!

This isn't just a coincidence. The vast size of our territory— yes, we're one of the largest countries in the world—requires fast, safe, and efficient ways to travel to all corners.

With thousands of airports of all kinds spread across the country, it's no wonder that so many movies feature airport scenes or are even filmed inside airplanes, right?

7

Alaska's price

Image: Joris Beugels

We have the great advantage of having the gorgeous state of Alaska as one of the 50 states. Beyond its natural beauty, it holds another impressive distinction: it's the largest state by area, covering approximately 663,300 square miles.

As you may know, Alaska was purchased in 1867 when US Secretary of State William H. Seward sealed a deal with Russia to acquire the territory. However, what some people may not know is just how affordable it was: the purchase cost $7.2 million, which means we acquired Alaska for about 2 cents per acre! To put it in perspective, adjusted for inflation, that $7.2 million would be equivalent to about $140 million today.

8

The first national park in the world

Image: Nicolasintravel

The United States is home to some of the most spectacular and diverse national parks in the world. And not only that, but we also have the honor of being the country that established the world's very first national park.

Inaugurated on March 1, 1872, Yellowstone National Park became the Earth's first national park. This event marked a turning point, leading to the creation of many other national parks and protected areas both in America and around the globe.

The incredible Yellowstone spans approximately 3,472 square miles , primarily in Wyoming, with portions extending into Montana and Idaho. Have you had the chance to visit it?

9

A special feature on Washington National Cathedral

Image: Ryan Arnst

The Washington National Cathedral offers many attractions for visitors, starting with its beautiful Gothic-style architecture. However, it also holds some secrets and fun facts within its walls.

Construction began in 1907 and took 83 years to complete. The wait was well worth it, as the Washington National Cathedral is now the sixth-largest in the world! And here's a fun fact: its famous Space Window features a real piece of moon rock at its center. Amazing!

Additionally, there's also a quirky feature that some visitors overlook: on the Cathedral's façade, there's a gargoyle with the face of none other than Darth Vader! This Star Wars character was added to the building's northwest tower in the 1980s after a children's design competition. A curious touch, isn't it?

10

Miles of bookshelves

Image: Roman Kraft

The Library of Congress is much more than a beautiful complex of buildings. Located on Capitol Hill in Washington, D.C., this famous landmark was established over 200 years ago in 1800 . Since then, it has preserved and protected countless documents, treaties, and books that reflect and constitute our nation's history.

Adding to our list of world records, the Library of Congress holds the title of the largest library in the world. It boasts an incredible 164 million items, which translates to 838 miles of bookshelves. That's enough to cover the distance from Atlanta, GA, to New York City, NY!

1

Jurors are selected at random

Courts select potential jurors randomly from public records like voter registrations and driver’s license databases . This system helps ensure juries reflect a fair cross-section of the community.

Random selection has been standard practice for decades, helping prevent bias in the legal system. Federal courts began expanding source lists following the passage of the Jury Selection and Service Act of 1968 to improve diversity and representativeness.

2

You receive an official summons

If chosen, you’ll receive a jury summons by mail with instructions on when and where to report. It typically comes from a local, state, or federal court.

The summons is a legal document. Failing to respond can lead to fines or penalties , although courts often allow postponements for valid reasons like work or medical issues.

3

You must complete a qualification questionnaire

Before serving, most courts require you to fill out a questionnaire about your age, citizenship, job, and background . This helps determine eligibility.

Federal law generally requires jurors to be U.S. citizens, at least 18 years old, and able to understand English. Certain criminal convictions or hardships may disqualify you.

4

Eligible people form a jury pool

Those who qualify become part of a jury pool, also called a "venire." This group is the starting point for selecting jurors for individual trials.

The size of a jury pool varies depending on the court and case . Large trials may require dozens of potential jurors to ensure enough qualified candidates remain.

5

Jurors are called into court when needed

From the larger pool, smaller groups are summoned to courtrooms when trials are ready to begin . Not everyone in the pool will end up serving.

Some people may wait hours or even days without being assigned to a case. If not selected, they are usually dismissed after their service period ends.

6

Lawyers and judges question potential jurors

In a process called "voir dire," attorneys and judges ask questions to identify bias, conflicts, or interests . This step ensures fairness in the trial.

Questions may cover personal experiences, opinions, or knowledge about the case. The goal is to select jurors who can remain impartial and follow the law.

7

Some jurors are dismissed during selection

Potential jurors can be removed "for cause" if they show bias or hardship . Lawyers can also use a limited number of peremptory challenges.

Peremptory challenges allow attorneys to dismiss jurors without giving a reason, though they cannot be used for discrimination based on race or gender.

8

A final jury is chosen

After questioning, a final group is selected. Criminal trials usually have 12 jurors, while civil cases often use 6 to 12 , depending on the court.

Alternate jurors may also be chosen in case someone cannot continue. These alternates listen to the trial but only deliberate if needed.

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There are different types of juries

The most common is the petit jury, which decides trial outcomes. A grand jury, by contrast, determines whether enough evidence exists to file charges.

Grand juries are typically larger, often with 16 to 23 members , and are used mainly in federal cases and some state systems.

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Jurors listen to the evidence and testimony

During the trial, jurors hear witness testimony, examine evidence, and listen to arguments from both sides . They must follow the judge’s legal instructions.

Jurors are not allowed to research the case or discuss it outside of the courtroom. This rule ensures decisions are based only on evidence presented in the courtroom.

11

Jurors deliberate privately

After the trial ends, jurors meet in a private room to discuss the case and reach a verdict. These discussions are confidential.

In criminal cases, the verdict often must be unanimous. Deliberations can take hours or even days, depending on the complexity of the case.

12

Serving is a civic duty, required by law

Jury duty is a legal obligation and a key part of the American democracy. It allows citizens to participate in the justice system directly.

Citizens are generally summoned for jury duty every one to four years, depending on the jurisdiction, though federal court service typically requires only one appearance every two years. If you serve on a trial, you are often exempt from serving again for at least 3 years. Summoning frequency is generally determined by lists from local, state, or federal courts.