Geography Geography 4 min read

Before GPS: Clever tricks Americans used to navigate the open road

Image: T.H. Chia

Image: T.H. Chia

Before smartphones and GPS started telling us where to turn, getting across the country required a little planning and a few clever tricks to remember the route. Travelers relied on paper maps, strangers on the road, and even public phone booths to stay on course. If your destination ever depended on the directions of a stranger, you’ll probably enjoy remembering a few of these clever tricks!

1
The MapQuest printout ritual

Image: José Martín Ramírez Carrasco

For many travelers, the trip really began here: sitting at the computer just minutes before leaving and printing turn-by-turn directions from MapQuest. The printed pages listed every step of the route, including the distance between each turn. This method was probably the one that marked the transition from traditional paper navigation to modern GPS systems.

2
Free maps at gas stations

Image: Jean-christophe Gougeon

Back in the 1920s, advertising executive William Akin came up with an idea to promote the new Gulf Refining Company gas stations. At the time, drivers still had to buy gasoline in five-gallon containers because service stations were uncommon. Akin proposed distributing free local maps in each area where these Gulf stations were located.

The idea spread quickly, and other gas companies soon adopted the same strategy. Over time, gas stations became natural stops for travelers, and many stations eventually began selling maps instead of giving them away.

3
The American Automobile Association Trip Triks

Image: Mike Mozart

No way you forgot this one! If you were a member of the American Automobile Association, you had access to Trip Triks: spiral-bound booklets customized for each traveler’s route. AAA staff highlighted the exact path on the map, marking gas stations, hotels, and attractions along the way.

4
Lost? Find a phone booth

Image: jerry chen

Lost in the big city? Step into a phone booth. Back then, many phone booths had maps inside showing nearby streets and landmarks. If you were lost, all you had to do was step inside, and within a few minutes, the problem was solved. The good news was that big cities had a phone booth on almost every major corner and intersection, so if the one you stopped by was already taken, you only had to walk a few steps to find another.

5
The thick book that lived in every car

Image: Bromley Atlases

The city street atlas. One of the best companions for drivers, if not the very best. These thick books showed detailed maps of entire cities, page by page. If you spotted a street sign but had no idea where you were, you could look up that street in the atlas index. It would point you to the exact page and grid where the street appeared, helping you figure out your next move. Do you remember flipping through a street atlas to find your way across a city?

6
Asking locals for directions

Image: Deva Darshan

Following directions back then required a bit of blind faith. You might hear something like, "Drive a few miles and turn left when you see the church," or "After the green restaurant, take the second road on the right." In rural areas, where road signs were scarce, a local’s guidance was often the best map you could get. Sometimes those directions were the only way to find a place that didn’t appear on any map. Have you ever followed directions like these and hoped for the best?

7
The co-pilot seat

Image: Xia Hua

This trick required teamwork. If you weren’t traveling alone, one passenger was usually designated as the "navigator." Their role? Reading the map, watching for road signs, and warning the driver about upcoming turns. A good navigator also had to learn the driver’s rhythm: when to speak up, when to stay quiet, and how quickly directions needed to be given. The best driver–navigator pairs worked together almost like Batman and Robin.

8
The Rand McNally Road Atlas

Image: GeoJango Maps

The Rand McNally Road Atlas is one of the most iconic travel tools in American road trip history. The atlas includes detailed maps of every state, showing highways, towns, and points of interest across the United States. For decades, it was a common sight in glove compartments and truck cabins, guiding travelers from city to city. Unlike digital navigation, the atlas allowed drivers to see the entire route and explore alternative roads along the way. Even today, many travelers still keep one as a backup option when cell service or GPS fails.

9
Following highway numbers

Image: Anne Nygård

During the era of long road trips, drivers didn’t worry much about street names. Instead, they followed highway numbers. If you got on the right road, like Route 66 or U.S. Route 1, you could relax and stay on it for miles and miles, sometimes across several states. As long as the number on the signs stayed the same, you knew you were still on the right path. This approach later helped inspire the Interstate Highway System, which made traveling across the country even easier.

10
The church, the bridge, the water tower

Image: Anders Jildén

Here's one of the classic road trip tricks: remembering landmarks along the road. This method required both memory and self-trust. Instead of coordinates or exact addresses, travelers remembered particular spots. They learned to look for things that stood out, like churches, bridges, water towers, or unusual buildings. When you reached the right one, you knew when it was time to turn. What landmarks did you rely on the most?

General General 4 min read

The secrets of the greenback

Dollar bills are green for this reason

Image: Pepi Stojanovski

The U.S. dollar is one of the most powerful and recognizable currencies in the world, but its physical form is unique for many other reasons . From its composition to its symbols, dollar bills and coins are carefully designed to combine history, security, and convenience. Let’s explore our national currency!

1
What are bills made of?

Image: Viacheslav Bublyk

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?

Image: U. S. Government, The Bureau of Engraving and Printing, Public domain, via Wikimedia Commons

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

Image: Lukasz Radziejewski

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

Image: Avinash Kumar

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

Image: United States Treasury Department, Public domain, via Wikimedia Commons

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?

Image: The original uploader was Durova at English Wikipedia., Public domain, via Wikimedia Commons

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

Image: Quilia

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)

Image: Money Knack

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

Image: Logan Voss

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.

Geography Geography 5 min read

Stories carved by the Colorado River

The missing pieces of the Grand Canyon: 10 incredible facts

Image: jesus esteban

The Grand Canyon is bigger than Rhode Island. It's deeper than four Empire State Buildings stacked end to end. Its rocks are older than dinosaurs. But those stats alone don’t quite capture its immensity — and are hardly the most shocking. There are nuclear shelters, hidden villages, and billion-year mysteries involved. Read on to learn 10 lesser-known facts about the Grand Canyon.

1
There's an unexplained billion-year gap

Image: John Graybosch

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

Image: Lauri Väin from Tallinn, Estonia, CC BY 2.0, via Wikimedia Commons

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

Image: Alexandre Henry Alves

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

Image: abdurrohman dzar

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

Image: Abhishek Navlakha

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

Image: MARIOLA GROBELSKA

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

Image: AussieActive

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

Image: Naeemphotographer2

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

Image: Alexander Wong

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

Image: joojoob27

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.

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