Paper boarding passes have become rarer in recent years

100 years of passenger air travel: a visual guide

This interactive timeline covers the first 100 years of passenger air travel, which was created in 1925 when the U.S. Post Office allowed private airlines to start delivering mail.

Randomly boarding passengers onto a plane is often faster than using boarding groups

Although boarding back to front or windows to aisles appear to be sensible approaches to quickly filling a plane, these methods still suffer from passengers stowing away their luggage, which too often halts the boarding flow. Research has shown that the ideal process, called the Steffen method, optimized efficiency by allowing boarding to continue even while stowing is underway.

Digital passports allow identity verification to be digitized

By scanning the security chip on the back of passports and capturing images or video of a person, apps like Google Wallet and Apple Wallet create a digital version of the document. Some states have also developed their own apps for digital driver's licenses.

Paper check usage is down 83% over 25 years

At the start of the millennium, more than 68 million checks were processed daily. Amid the adoption of automated clearinghouse (ACH) payment systems, that number has sunk to 12 million a day.

The long-lost art of coded postage stamps

In the 1800s, the postcard was a relatively new phenomenon, as was the post office. In the burgeoning system, recipients of mail had to sometimes pay prohibitively costly fees to receive it. So to get around the fees, a system of placing stamps on the envelopes in specific ways to communicate—a simple yes or no—was devised by clever mailers and expanded and codified by postcard companies into guides. Learn about the fascinating system here.

Mass market paperbacks were originally designed to fit in your pocket

These books were supposed to cost no more than a pack of cigarettes and had a huge reach thanks to their affordable price. The pocket-sized paperbacks are now going extinct due to the convenience of downloading reading materials on smartphones and other shifts in the publishing industry.

Paper coupon suppliers and major newspaper insert distributors are in decline

Given the uptick in digital coupon adoption, sellers who offered coupon inserts or individual coupons for sale online have been closing up shop in recent years.

Anticipating moon tourism by 2000, Pan Am issued 'First Moon Flights' club cards

More than 93,000 cards were issued between 1968 and 1971, creating a waitlist that began when Gerhard Pistor, an Austrian journalist, visited a Viennese travel agency to request a flight to the moon. The cards were issued at no cost and numbered in the order they were issued.

Voting in the US has shifted from days-long journeys to modern, secure ballots

In the early 1800s, voting was limited and arduous, often requiring long travel and in-person balloting. This illustrated resource traces how voting technology evolved to expand access, speed elections, and improve security over time.

American Express is credited with inventing the traveler's check

In the 1890s, then American Express President James C. Fargo was frustrated that he couldn't get cash while traveling in Europe outside of major cities. Marcellus Berry, an American Express employee, came up with the idea of a traveler's "cheque": a prepaid check, similar to cash, that requires the signature of both the customer and the receiving institution to be valid. American Express never modernized the spelling of the word "cheque" and stopped providing them at the end of 2020.

A life measured on the backs of coffee receipts

Years ago, a storyteller doodled on the back of a receipt. Hundreds of doodles later, Odding Wang has created a digital diary with a tactile feel. Click through the project's website to peruse the portals into Wang's life and mind. Hovering over a comic will reveal the receipt on the other side.

Why millions of telegrams are still sent every year

Telegrams enabled much faster communication across distances when they were invented in the 1800s, but they became generally obsolete after emails and cell phones were widely adopted. So why are 17 million still sent every year? A combination of factors: the legal requirement to send paper documents far and fast, the resistance to updating processes, and nostalgia. Explore more with this video.

The Declaration has survived centuries of travel, damage, and preservation missteps

This piece traces the Declaration's 200-year journey from its creation in 1776 through repeated relocations, risky copying methods, light damage, fires, wartime evacuation, and shifting federal custody—long before modern archival protections existed.

Where did artful screen savers go? A history

Early on in the personal computer days, users and engineers realized screens could be damaged if the same image—of a button, a logo, or a navigation bar—stays static for too long. To preserve the screen, developers deployed screen savers—automatic reductions in the light intensity, or regularly changing patterns on the screen. These artful screen savers had a heyday in the 1990s, but have since lost popularity to the simple black screen. Read the history here.

There have been many versions of US banknotes throughout history

From the Civil War to the present day, the US has gone through many, many versions of paper money (or “notes”). Some notes, like “demand notes,” were created to finance the Civil War. Others, like “treasury notes,” helped pay for silver.

Space travel sparked inventions we now use every day

Technologies developed for space exploration produced lasting spinoff innovations—from camera phones to memory foam—displaying how the space race reshaped everyday life here on Earth

Americans are reading fewer books than in the past

A 2022 Gallup survey found that Americans are reading fewer books than ever before. An additional study found that the time people spend reading has dropped over the last 20 years. The most compelling narrative for the shift? Screens have stolen potential readers, occupying the time that they otherwise would’ve spent with books.

Imagining the nostalgia we'll feel one day for gas stations

Car drivers everywhere are accustomed to an endless array of gas stations along the road, with their high, flat roofs, convenience stores of varying quality, and bathroom availability. Current trends in electric vehicle development point to such stations' inevitable obsolescence, and one photographer has begun documenting neglected filling stations in transit-oriented Germany. See the images for yourself and begin the journey toward so-called petronostalgia.

Lasers have been used to create natural adhesives for paper

German researchers at four Fraunhofer institutes have developed a method to seal paper packaging using a carbon monoxide laser. Without the need for glue or plastic adhesives, the Papure project is expected to improve the recyclability of paper. (Some readers may experience a paywall.)

Millennial tastes in amusement parks have made coasters more family-friendly

As parks raced to make the biggest, longest, tallest roller coasters, costs skyrocketed, and the return on investment became more challenging to achieve. Consumer tastes have also changed, with Millennials in the US preferring more mid-tier rides for family inclusion.

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.

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

A century of Billboard issues documenting the evolution of popular music.

Particle detection has evolved from cloud and bubble chambers to digital 3D displays

As invisible particles passed through cloud and bubble chambers, they disrupted supersaturated vapor and superheated liquid, respectively, creating trails that served as proxies for cosmic rays. The transition from photographed events to digital sensors enhanced data collection and accuracy.

How musical guests disappeared from late night TV

The late-night landscape has changed dramatically in the past five years, with the most visible difference being a severe lack of music. This writer set out to learn why that is—and what it means for audiences and artists alike.

A brief explainer on food expiration dates and what they really mean

Roughly 20% of food items in the US are thrown out because consumers don't understand how to interpret expiration labels. Over time, when supermarkets began carrying processed foods, grocers use packaging codes to track how long foods had been on...

See every Coachella lineup from the festival's 2-plus decades

The unveiling of the Coachella poster has become an annual cultural tradition (and an amusing internet meme). This official collection of every poster from the festival's lifespan showcases the undercard acts that eventually became headliners, as well as the big names that fell into obscurity. The collection shows not only a fascinating illustration of the evolution of pop culture, but also subtle changes in Coachella's design, offering a case study in slowly refining a brand's identity.

Upgrade cost and compatibility issues have kept Microsoft's legacy systems alive

As of 2025, Windows XP and Windows NT continue to power ATMs and transit systems, while Deutsche Bahn's trains use Windows 3.11 for display systems. Microsoft's continued support for these operating systems helps it maintain its dominance in the business sector.

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

Stanford built a Google Maps for the Roman Empire, revealing how much it cost to travel in the ancient world

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

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

Some coin denominations have ridges etched on their sides, partly to prevent counterfeiting, in a practice called 'reeding.'

As of 2025, the most cited papers in science include a review of graphene, methods to improve image recognition, streamlining electron density calculations, and optimizing protein studies.

The 1987 Nintendo video game 'Stadium Events' isn't known for being particularly fun, but its scarcity has made it a highly sought-after item that has sold for up to $35K at auction.

Long before Major League Baseball began allowing instant replay for balls and strikes, an umpire reluctantly used the technology to determine whether a hit was a home run, a move that inadvertently ushered in a new era for the sport.

Human-to-human transmission of hantavirus remains extremely rare, so the 2026 hantavirus cruise ship outbreak doesn't mean we're facing a COVID-style pandemic risk.

Dorothy's famous entrance into Oz in 'The Wizard of Oz' relied on analog tricks, including a body double and sepia-toned paint, as much as it did on technology

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.

US consumers collectively owe more than $1T to credit card companies—almost as much as they owe in auto loans.

Sony set the standard for cylinder-shaped batteries when it repurposed manufacturing equipment used to make rolls of magnetic recording tape.

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.

After 25 people used virtual reality headsets to practice flying with virtual wings—flapping their arms—their visual cortex responded to the wings almost as if they were real arms, treating them as body parts.

For centuries, it was common to sleep in two shifts: a few hours at the beginning of the night, and a longer period beginning around midnight

After NASA's Voyager 1 captured Earth as a single pixel as it left the solar system in 1990, astronomer Carl Sagan used the image to reflect on humanity's fragility and the responsibility to protect 'the only world we've ever known.'

Take a 3D tour of the Hajj, Islam's annual pilgrimage to Mecca, undertaken by over 1.5 million Muslims.

Learn how to read a prospectus, the juicy document that any company must file with the SEC before going public.

'Shogun,' a 1980s TV series, helped popularize sushi in the US by stimulating an American interest in Japanese culture.

An investigation suggests a Scottish island became awash in forever chemicals via seafoam and seaspray—raising questions about what that means for the safety of other coastal areas.