Why millions of telegrams are still sent every year

9 billion voice notes are sent every day

The recorded voice note has come to replace a regular phone call conversation for some. Observers suggest the monological nature of the voice note corrodes the benefits of real-life interactions.

The decline of the landline in the US

It costs 35% less to maintain AT&T's fiber subscribers than it does to keep up its legacy copper lines, a big difference leading the major phone company to plan to end its copper lines by 2030. Tens of millions of households still utilize a landline phone in the US, but they've been trending downward for at least two decades as people have gone wireless. Learn the trends and see the data visualized in this article.

Tracing the evolution of mobile phones

The first cell phone was created in 1973, with a 2.4-pound handset and a battery life of about 30 minutes. Since then, pretty much everything about it has drastically changed, with more than 5 billion cellphone users across the globe (that's more than half of the world population). Learn about the evolution of the mobile phone and where the technology may go in the future with this four minute video.

Around 380 underwater cables power the Internet across the world.

On July 29, 1858, two steam-powered battleships met in the middle of the Atlantic Ocean. There, they connected two ends of a 4,000 kilometer (2,500 mile) long, 1.5 centimeter (0.6 inch) wide cable, linking for the first time the European and North American continents by telegraph.

Charting the most popular email providers since 1997

The email is the most stable feature of the Internet; a rare digital product that changed little over the decades. Nonetheless, the major email service providers have vastly shifted. Watch this time-based chart which shows the number of users of the top 10 email providers since 1997, and see how totally nonexistent Gmail skyrockets to dominance by today.

19th-century Americans used technology to try to prove the existence of ghosts

In the 19th century, following technological advancements like the telegraph, phonograph, and others, efforts were made to capture proof of ghosts. These technologies seemed supernatural in their own right and emerged at the same time Spiritualism took off in the US, resulting in new approaches to connecting with the dead.

Meta has reported WhatsApp users send over 100 billion messages daily

Across 180 countries and 60 languages, approximately billion users use the messaging app every day, with about 400 million in India, WhatsApp's biggest market. In some countries, the app has gone beyond messaging, enabling users to schedule doctor's appointments, conduct real estate deals, and provide direct-to-consumer sales.

Are emojis real communication? And other questions for the experts

Emojis took off around 2009, after Apple's operating system for its defining iPhone became available in Japan. By 2012, a standardized set of emojis was released, and now seven in ten users feel a message without one of the 3,664 official emojis is lacking.

Memes can be traced back to the chain letter

Such intentional reshaping of communication transmissions dates back at least hundreds of years to the advent of the chain letter, a type of message that asks readers to create their own copy or at least forward it to others.

As technology evolved, so did Wall Street

Before the telephone was invented in the mid 1800s, people had to trade stocks in person. But once office telephones and computers became commonplace, banks and other financial institutions didn't necessarily need to have their headquarters near exchanges like Wall Street's New York Stock Exchange.

Roughly 350,000 billboards advertise across the US

The world's oldest form of advertising can feel antiquated in a digital age, but the place-specific signs are the basis of a $9B business. Learn the history of these ads and how they remain relevant in a digital age.

Reforms reducing postage rates helped popularize Valentine's Day cards

In 1845, Congress voted to slash postage rates, paving the way for larger swaths of the American public to send and receive mail. This convenience was capitalized on by paper and stationery sellers who sought to profit from the holiday. Esther Howland's New England Valentine Company was the first major commercial producer of valentines in the US, but Hallmark followed a few decades later.

Paper boarding passes have become rarer in recent years

Many travelers have shared their attachment to the documents as their utility fades. This sharply illustrated timeline reviews the development of the paper boarding pass as technology evolved.

In the 1970s, a former NASA engineer pitched remote work as a solution to an energy crisis

His name was Jack Nilles, and he wrote a book that is considered the "founding document of telecommuting" in 1973 called "The Telecommunications-Transportation Tradeoff," coining the terms "telecommuting and telework." Nilles argued that telecommuting could serve as an "alternative to transportation," helping cut down on gridlocked traffic and reduce society's reliance on nonrenewable resources like oil. (Some users may experience a paywall.)

Contrary to popular belief, the $2 bill is still in circulation today

However, it is far less common than other bills. Usage of the $2 bill has been in decline for decades, but the US Treasury hasn’t retired the bill yet. A podcast episode from the Fed’s educational program explains why the Treasury doesn’t print new $2 bills every year, and why they're still considered legal tender.

The engineering underlying the electric grid and why it needs to be modernized

The system includes generators for producing electricity and millions of miles of transmission and distribution lines to transport the energy. The substantial increase in the number of electronic devices and electrical demand since the construction of much of the grid in the mid-1900s has strained infrastructure, requiring continuous upgrades and massive investments in new construction.

Intended to last four years, the Voyager spacecraft have lasted nearly five decades

Launched in 1977, the Voyager probes still send data from billions of miles away, guided by engineers who’ve turned down promotions to stay with the mission. The team continues to support the probes as they move 37,000 mph through space.

What the stars once meant to ordinary people

The stars were a crucial aid for ordinary human beings in premodern societies, acting as regular timekeeping phenomena and celestial navigators. Today, light pollution and modern technology have rendered the stars a mere aesthetic delight for most of us, but their significance in history remains. Watch this brief video to learn how premodern humans used the stars for navigation, mathematics, and more.

Explore fun facts from the USPS, including unique post office buildings, a stamp that traveled past Pluto, and more.

'There cannot be mental atrophy in any person who continues to observe, to remember what he observes, and to seek answers for his unceasing hows and whys about things.'

-Alexander Graham Bell (1847-1922)

Executives at American Online wanted to shut down AIM

Despite not seeing value in a service that could not be charged for, executives were pushed by the development team behind AOL's Instant Messenger to keep it free, which helped it reach 36 million active users. Screenname selection and away messages allowed users to express their individuality, and the use of emoticons sets the tone for future internet communication.

Laser technology powers communication, medical and manufacturing tools

Lasers are used when scanning groceries, printing documents or undergoing cosmetic procedures to enhance efficiency, precision and accuracy. Missile defense, targeting and optical communication systems have made using laser technology habitual in the military.

Quantum mechanics-based technology may explain the Fermi paradox

It describes the discrepancy between the high likelihood of life beyond Earth given the vastness of the universe and the lack of evidence for such life, since extraterrestrial civilizations have not communicated with us. However, quantum communication—a more information-dense and effective method than classical means—requires massive receivers and very narrow signals, which would easily miss Earth, making a lack of signals expected.

There are 5 key reasons why people carry out hoaxes

While it's hard to pinpoint just one motive for trickery, many cases indicate that hoaxers are seeking attention. Other reasons include making a profit, or simply that fooling others is fun.

Soap operas are significantly less popular now than in past decades

In the genre’s heyday, soap operas commanded large audiences. But recent decades have found the soap opera in steep decline. One data journalist suggests it's an issue of classification: Shows similar to soap opera, like “Grey’s Anatomy,” remain popular, though they’re not considered soap operas because they resemble “prestige television.”

‘Leaves of Grass’ remains relevant to American identity 170 years later

Whitman’s “Leaves of Grass” is over 170 years old, but many say its poems are as relevant as ever. This podcast unpacks how Whitman constructed a dynamic, original text that would transcend his time and inspire generations of poets.

Despite being favored by 87% of Americans, Congress does not have term limits.

Track the location of the Voyager probes, currently between 13 and 15 billion miles away from Earth.

Some researchers have labeled nomophobia, the fear of being without your phone, as 'the phobia of the 21st century.'

The original copy of the Declaration of Independence is not a pristine document, and even features a smudged anonymous handprint in the bottom left corner.

20,000 letters to the advice columnist 'Dear Abby' provide insight into prevailing sex, religion, and LGBTQ fears, anxieties, and concerns from the 1950s onward.

While the first exchange-traded fund (a 'basket' of different assets that can be bought and sold on a stock exchange) in the US only launched in 1993, the global ETF market has grown to more than $10T in the short time since.

This site reaches millions of visitors who are tired of AI chatbots and seeking human connection. Pretend to be an AI chatbot and ask questions, provide answers, and draw for people in real time.

The history of many kitchen appliances involves unexpected discoveries and applications, including wartime radar turned hamster defroster and replacing an 'ice king' with heat-stealing boxes.

Up to a million Girl Scouts sell about 200 million cookie boxes every spring, generating $800 million, largely because refusing a child is frowned upon

Power lines are dotted with large, brightly colored balls to improve the visibility of these thin wires to helicopters and small planes and help prevent potential crashes.

Memecoins are a type of cryptocurrency—a form of digital currency with a wide variety of uses—created around popular 'memes,' or viral internet jokes.

Bone marrow (soft tissue found inside certain bones) generates roughly 500 billion new blood cells each day

English mathematician Ada Lovelace wrote the first computer algorithm a century before computers existed and hypothesized that computing devices would one day be able to compose music—foreseeing the generative AI systems of today.

US housing costs have risen by roughly 175% between 1991 and 2026—but a growing number of Gen Zers are becoming homeowners anyway. In 2025, 4% of homebuyers were Gen Z, up from 3% the year before.

Telehealth demand for GLP-1s for weight loss is booming as consumers seek easier access.

For centuries, Niagara Falls has been a magnet for daredevils seeking to conquer one of nature's most powerful wonders, with its 200-foot drop and water rushing at 32 feet per second with 280 tons of force.

Electrical grids worldwide must double their power delivery capacity by 2050 to meet surging demand from AI and electric vehicles.

The price of gas is a composite made up of several different factors, with the federal gas tax making up less than 20% of what drivers pay at the pump.

'Silent' fireworks have gained more interest in recent years as a quieter celebratory option.

Recent research found that the brain doesn't seem to massively rewire following amputation—upending earlier beliefs about the cause of phantom limb pain.

After the Boston Tea Party, colonists switched to coffee, which became the main morning drink for revolutionaries.

See how each of the more than two million known species relates to each other—and to common ancestors—in this zoomable tree of life.

Chaos theory—informally known as the butterfly effect—is the reason why weather forecasts are presented with probabilities rather than certainties.

In 1963, a basement renovation in Turkey revealed a passageway to a hidden, multilevel underground city that once housed as many as 20,000 people