1

Postal "Army" (of Sorts)

Image: Emily Powers

The U.S. Postal Inspection Service (USPIS), founded in 1775, is the nation’s oldest federal law enforcement agency . It protects the USPS, its employees, and its customers from crimes such as mail fraud, theft, and identity theft.

USPIS agents investigate mail-related crimes, provide security at postal facilities, and work to stop illegal drugs from being transported through the mail system.

2

Zip codes

Image: Tareq Ismail

ZIP codes were introduced by the USPS in 1963 to improve mail sorting and delivery. The five-digit code, short for Zone Improvement Plan, pinpoints specific geographic areas.

The digits represent a region, a city or county, and a local delivery zone . Today, ZIP codes are also used to study demographics and help businesses target mailings to particular areas.

3

The Postal Anthem

Image: Keagan Henman

The "United States Postal Service Anthem," composed by Jack Stamp (yes, that is his real name), honors the USPS and its long-standing service to the nation. It’s a musical tribute to the dedication of postal workers and the agency’s role in American life.

The lyrics highlight the USPS’s core values: honesty, integrity, and reliability, while celebrating its impact on U.S. history and everyday citizens.

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4

Guaranteed delivery

Image: Victória Kubiaki

The USPS is legally required to deliver to every U.S. address, no matter how remote . This includes over 153 million addresses, even in hard-to-reach areas.

To meet this huge challenge, USPS uses curbside mailboxes, local post offices, and partnerships with community centers. Virtual mailbox services, such as Stable, also help remote residents access and manage their mail online.

5

A lot of mail

Image: Sam LaRussa

Every day, the USPS handles over 400 million pieces of mail, including 162 million First-Class items. It delivers worldwide to more than 180 countries through its Global Express Guaranteed service and processes approximately 44% of the world’s mail . That is a lot of mail, by any standard.

To manage this massive volume, USPS uses advanced automation tools and operates over 34,000 retail locations, keeping its system fast, efficient, and reliable.

6

Going out West

Image: Jim Strasma

In the 19th century, the USPS played a vital role in developing the American West, providing new settlements with access to mail, supplies, and communication. Post offices and mail routes connected remote areas to the rest of the country.

This network helped settlers stay in touch with loved ones, receive news, and trade goods. Without the USPS, much of the frontier would have remained isolated.

7

Post office in a tavern

Image: Kevin Snow

‍ The first USPS office was established in Boston in 1775, inside a tavern associated with Benjamin Franklin , who served as the first Postmaster General. Franklin viewed mail delivery as key to America’s independence and began developing a postal network.

The office supported routes to Philadelphia and New York, and by 1789, post offices existed in all 13 colonies.

8

A floating post office

Image: Alessio Billeci

The Halibut Cove Post Office in Homer, Alaska (ZIP code 99603, in case you are interested), is unlike any other: it floats on water!

This tiny post office operates from a houseboat that’s permanently docked , serving the local community right from the harbor.

9

Bad handwriting department

Image: Kit (formerly ConvertKit)

We are not sure as to how often this happens, but it must be often. When automated equipment at a USPS processing plant cannot read a piece of letter mail, an image of the mail is captured and sent to the Remote Encoding Center (REC). At the REC, employees review the image and manually enter the address information .

The information is matched up with a valid address, the data is transmitted back to the equipment at the plant, and a barcode is printed on the letter, which can be read by the processing machines.

10

Mail a brick

Image: Math

Yes, you can mail a brick through the U.S. Postal Service. Just write the recipient’s address and return information directly on the brick with a permanent marker .

Once it’s weighed and stamped with the correct postage, your brick is ready to ship.

11

Someone mailed a kid

Image: Jonathan Borba

In 1913, shortly after the Parcel Post service began, some parents mailed their children to relatives. One baby in Ohio was sent to his grandmother just a few miles away .

The child arrived safely, but the incident led to new rules banning people from being sent through the mail.

1

Area 51

Image: Michael Herren

Location: Nevada

Shrouded in secrecy, this military base has become synonymous with UFOs and government cover-ups. Its official purpose was testing aircraft like the U-2 spy plane and Stealth Bomber, but its classified nature fueled decades of wild speculation, ranging from secret weapons to actual aliens working for the government.

2

Coral Castle

Image: Audric Wonkam

Location: Florida

This massive stone structure was built by a single man, Edward Leedskalnin, using enormous limestone blocks—some weighing 30 tons. According to him, no heavy machinery was ever used during the construction, and he even claimed to know the secrets of the pyramids . To this day, engineers and historians debate how he moved and placed those stones with such precision.

3

Skinwalker Ranch

Image: Jacob Padilla

Location: Utah

This 512-acre property has long been at the center of UFO sightings, cattle mutilations , and alleged portals to other dimensions. The stories were so compelling that, in the ’90s, a private research organization purchased the ranch to try and make some scientific sense of the claims, conducting extensive field studies. However, after nearly a decade of research, they found no conclusive evidence.

4

Mammoth Cave

Image: Ksenia Kudelkina

Location: Kentucky

The world’s longest known cave system has its fair share of unexplored tunnels, ghost stories, and strange air currents. More than 400 miles have been mapped , yet many passages remain uncharted. Researchers have yet to fully understand the cave’s underground ecosystem, and new chambers are still being discovered today.

5

The Marfa Lights

Image: Alexandra Vo

Location: Texas

Reported since at least the late 19th century, floating orbs of light have been seen near this small town with no consistent explanation. Night watchers continue to gather at designated viewing areas along Highway 90, hoping for a glimpse. While scientific studies suggest that distorted car headlights are the most likely cause, many remain convinced otherwise.

6

The Devil’s Kettle

Image: Andrew Ling

Location: Minnesota

This unusual waterfall splits in two—one half flows normally, while the other vanishes into a deep pothole with no known exit. Scientists poured dye, ping-pong balls, and even GPS trackers into the mysterious hole, all to see where the water ends up. While researchers eventually confirmed it rejoins the river underground, exactly how and where remained elusive for decades.

7

Cahokia Mounds

Image: pcrm Dorego

Location: Illinois

Built centuries before Columbus arrived in the Americas, the ancient city of Cahokia featured massive earthen mounds, wooden palisades, and likely formed part of complex trade networks across the continent. Despite having a population rivaling London in the 1200s, according to archaeologists, the city was mysteriously abandoned in the span of a few years. No written records explain its decline, though environmental stress, resource shortages, and internal social factors are often cited as possible causes.

8

Blythe Intaglios

Image: Alexander Schimmeck

Location: California

Similar to Peru’s Nazca Lines, these giant geoglyphs are etched into the desert floor, seemingly visible only from the sky. Created by scraping away dark rocks to reveal lighter earth beneath, the figures are believed to be between 450 and 2,000 years old, depending on the specific design. While their exact purpose remains a mystery, they are believed to have had a ceremonial function.

9

The Spooklight

Image: Ben Griffiths

Location: Missouri-Oklahoma Border

Also known as the Hornet Spooklight, this floating orb has been seen since at least the late 19th century. It appears along a rural stretch of road near the small community of Hornet, Missouri, and Quapaw, Oklahoma. While some theorize it could be caused by car lights from miles away, some sightings predate automobiles.

10

Roanoke Island

Image: Stephen Crane

Location: North Carolina

In the 1580s, an entire colony vanished overnight, leaving behind only the word "Croatoan" carved into a tree. No graves, no remains—just an eerie disappearance that sparked centuries of theories, from disease and starvation to assimilation with local tribes. Modern archaeology uncovered European artifacts at sites associated with Native groups miles away, but no definitive evidence has ever solved the mystery.

1

Clean your lens

Image: Mika Baumeister

We’ll start with probably the most essential—and somehow most overlooked—tip: take a moment to clean your smartphone’s camera lens. Over time, it can accumulate dust and smudges, which can result in hazy or blurry photos.

Give it a quick wipe with a soft, lint-free cloth . It can make a significant difference in the clarity of your shots.

2

Investigate your camera app

Image: Brett Jordan

Almost every single smartphone comes with a default camera app that’s user-friendly and packed with features. Take some time to explore it , learn how to switch between photo and video modes, and familiarize yourself with settings like Portrait Mode, Night Mode for low-light shots, and Panorama Mode for landscapes.

3

Use gridlines

Image: Jonathan Kemper

Gridlines allow you to center your focal points and enhance the visual appeal of your photos. Most mobile camera apps let you turn them on easily. These gridlines strategically divide your screen into thirds , both horizontally and vertically, adding balance and symmetry to your shot .

4

Focus and exposure control

Image: François Genon

Focus and exposure are two of the most important settings you can adjust in a manual camera to achieve different effects in photography. Fortunately, both functions are available on most modern smartphones.

By playing with different focus and exposure points, you can highlight a specific subject against a blurred background or ensure a well-balanced shot in difficult lighting conditions.

5

Lighting

Image: Ben White

Always try shooting in natural light, often referred to as available light, whenever the opportunity arises. Natural light gives a gentle, even illumination that can significantly enhance the quality of your photos.

Avoid harsh, direct sunlight, which can create intense and unflattering shadows, potentially leading to overexposed or underexposed areas. If you're shooting in low light, rest your phone on a flat surface to stabilize it for long exposures.

6

Play with composition

Image: Eaters Collective

Experiment with different angles and perspectives to enhance your subject. Don't be afraid to get low or high for a unique viewpoint. Also, pay attention to what’s in the background and eliminate any distractions that might detract from your subject.

7

Take pictures often

Image: Ferdinand Stöhr

Practice makes perfect. Since your phone is always with you, it’s easy to integrate photography into your daily routine. Whether you snap a selfie or take a few shots on your way to work, there’s no wrong way to be a smartphone photographer. Great photos often come from everyday life.

8

Take many shots

Image: The Free Birds

Long gone are the days when you had only 36 exposures in your camera and had to choose each shot carefully. One of the best things about smartphones is that you can take as many photos as you want, and there is no need to print them to see the results . This makes it much easier to learn and improve as you go.

9

Avoid digital zoom

Image: Redd Francisco

Digital zoom generally produces poor-quality images, even on the best smartphones. Avoiding it is one of the basic photography tips for taking better photos. Instead of using a digital zoom, simply move closer to your subject to maintain image quality.

10

Use HDR

Image: Kote Puerto

HDR stands for High Dynamic Range, and it’s a common feature on many smartphones. It enhances detail in both dark and light areas to provide a more balanced exposure . HDR prevents the sky from becoming too bright or the ground from appearing too dark, making it especially useful for landscape photography.

11

Set a high resolution

Image: TheRegisti

Simply put, the higher the resolution of your photo, the better quality it is . When taking pictures, try to get as close to the subject as possible, rather than zooming in. Take advantage of the higher pixel count.

12

Aspect ratio

Image: Alice Donovan Rouse

The aspect ratio determines the width and height of your photograph . The standard 4:3 ratio is versatile, but you can also choose widescreen 16:9 for a cinematic look or square 1:1 for Instagram-ready shots.