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

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.

Nearly 3 million people fly in and out of US airports every day

However, not all of those passengers generate revenue for the airlines they purchase their tickets from. One business class traveler typically pays for five to six economy travelers. That's partly because airlines measure profit by the square foot, and although a business class seat is usually roughly 30% roomier than economy seats, the business class traveler usually pays about three times as much as someone sitting in economy.

Aviation expert breaks down the safest seat on an airplane

The bottom line is air travel is very safe—much safer than road travel. But you can always up your chances. So, here's one expert's take on the safest seat on an airplane.

Read about 'skiplagging,' a money-saving travel hack

A consumer loophole known as "skiplagging" is a travel hack where travelers purchase a cheaper flight with a layover in their destination city. The hack works when flights to other cities with layovers at your destination are cheaper than direct flights to your destination. Airlines don't like the practice, but there's no specific law forbidding it.

Traffic flow can be improved through research into card shuffling

Card-shuffling mathematics has been applied to solving problems in biology to estimate the evolutionary distance between organisms and in computer science to determine the optimal distribution of files and folders in databases.

Differences in air pressure above and below an airplane's wing allow it to fly

The bending of air around a surface causes it to flow more quickly, reducing the pressure exerted by the airflow. In a commercial airplane, the pressure difference between air diverted above the wing and air flowing undiverted below it creates enough lift to overcome gravity.

How Marie Kondo packs for vacation

Marie Kondo is famous for her organizational style, a form of minimalism that emphasizes utility and practicality. It's a philosophy that translates to packing for travel. In this interview, Kondo walks through several tips, including packing a suitcase vertically, stashing spare tea bags, and keeping a notebook handy.

How a panel blew off a Boeing plane in mid-air

As Alaska Airlines Flight 1282 climbed just over 16,000 feet into the sky, a refrigerator-sized panel was ripped from its side, forcing it to land. Few of the 171 passengers were injured. This infographic explains how the panel tore from the body of the Boeing 737 MAX 9 plane, which had only been in service for eight weeks.

CT scanners at airports take images across energy bands to identify baggage contents

Old X-ray scanners' inability to distinguish between water and explosives has driven strict liquid bans and longer wait times through airport security. New scanners combine multi-angle images across the energy spectrum to determine an object's density and atomic composition for improved threat detection.

During World War II, turbulence was used to make ice cream

Before a mission, bomber crews packed buckets of ice cream mix into the rear gunner's compartment. Once airborne, freezing air solidified it, and turbulence churned it smooth, so that pilots had a fresh ice cream after landing.

Breaking the genome into random segments accelerated the Human Genome Project

Hierarchical shotgun sequencing is a method for determining an organism's genome by fragmenting DNA before sequencing. By creating fragments with overlapping nucleotide bases, the DNA is reassembled by matching fragment ends.

Five potential ways to achieve time travel

While the author discounts the possibility of traveling to the past, it lays out five hypothetical modes of catapulting into the future: speed, gravity, suspended animation, wormholes, and light. Each has some scientific basis, but none are realistic for humans. Read the article to learn where they offer promise and where they fall short.

During flights, cell phones can act like signal jammers as they search for service

When farther from cell towers, these devices expend more energy to emit more powerful signals, which can overwhelm any ground-based tower or radio telescope they fly past. Rather than protecting the flight, airplane mode conserves a cell phone's battery.

Dollar stores often place staple items at the back of the store

This forces customers to encounter other, less-necessary items on their way there, leading to impulse buys. This video explains other ways that dollar stores make money while selling extremely cheap products, keeping dollar store profit margins relatively high.

A financial analysis of space trash cleanup strategies identified long-term benefits

Despite significant initial costs, a NASA report found that removing small debris would provide savings from preventing mission-ending damage, which would offset expenses within a decade. Financial benefits would also come from using less fuel for maneuvers to avoid collisions with debris.

Guide a ship to dock at the International Space Station

Dozens of ships dock at the ISS yearly, rotating astronaut crews and delivering supplies. This simulation lets you try docking a SpaceX Dragon 2 using the same interface and controls as NASA astronauts.

Sewage on cruise ships is cleaned onboard by bacteria and advanced filtration systems

A cruise ship's onboard sewage plant processes black water, human waste or sewage, and gray water, wastewater from sinks, showers, and washing machines. Treated water is stored until the ship reaches a distance where it can legally discharge it.

Book building is widely considered the most efficient way to price securities

During the book-building process, bankers determine an IPO’s price per share, requesting bids from fund managers and other institutional investors for the number of shares they want and how much they’d be willing to pay for them.

The doorway effect is when people forget their task when entering a new space

The "why did I come in here?" feeling after walking into a room comes from the brain creating event boundaries to organize memories. Mentally revisiting a previous room can help recall tasks and reverse memory loss. (Some readers may experience a paywall.)

The most effective method of managing invasive species is prevention education

Controlling a spread after a species has become established in an area is much more costly and time-consuming than early detection and rapid response. Control methods include the purposeful introduction of predators, the use of pesticides, herbicides, fungicides, and insecticides, and physical collection and removal.

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.

During glacier surging, these bodies of ice can move over half a football field a day

The movement of these glaciers, which repeatedly speed up and advance for months or years after stalling or moving backward for a time, results from melting ice that reduces friction between them and the ground, allowing them to slide more quickly. Scientists note that this effect is becoming more frequent due to climate change.

How to balance paying down debt vs. investing

When someone has extra money in their pocket, they're quickly faced with a decision: Is it a better idea to use that money to pay down debt, or invest it? While the answer depends on each individual's financial situation, this video explains which solution works best depending on the circumstances. Watch it here.

The US Pacific strategy sought control of key islands to close in on Japan

The US adopted a two-pronged "island hopping" campaign across the Central and Southwest Pacific from 1943–44, deliberately targeting strategically crucial but less-defended islands. This allowed forces to bypass heavily fortified Japanese strongholds and build airfields for bombers aimed at Japan, drastically accelerating the path toward Tokyo while conserving manpower and resources.

On the benefits of 'fart walks'

Walking has proven benefits for flatulence by kickstarting the process of peristalsis in the bowels and facilitating easier farts and burps. The timely exercise is also correlated with weight loss (as well as potentially reduced opportunities for social embarrassment).

Working at a startup isn't for everyone, and is often more fast-paced than a run-of-the-mill job

Some argue that ideal startup employees have to be better than the average worker at managing uncertainty, acting with an "ownership" mindset rather than being a cog in the machine, and pushing limits.

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

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

How Amazon operates a 'flywheel' business model, a self-reinforcing cycle that drives continuous growth

Gerrymandering works through two techniques: cracking opposing voters across districts to dilute their power, and packing them into a few to waste their votes in lopsided majorities.

To reduce wrinkles in clothing, research recommends gentle wash cycles with more water and tumble drying with smaller loads and longer times.

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.

Watch how algorithms can be designed to train themselves and self-improve without human input, to the point where the optimized code is too complex for programmers to understand.

In recent years a child anxiety expert has created and tested a novel phobia and anxiety treatment approach for children, focused on changing how parents respond to the fears.

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

An initial public offering or 'IPO' is the process of a private company becoming public by putting shares of the company on the stock market for purchase.

The American cockroach is actually from Africa, an apparent hitchhiker aboard ships carrying enslaved people, with evidence suggesting the bug may have arrived in the New World as early as the 1600s.

Hotels in Cannes, the glamorous city on the French Riviera, hire hawks to ward off seagulls during the city's famous film festival.

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

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

Legendary architect Frank Lloyd Wright designed the SC Johnson headquarters in Wisconsin, aiming to make a cathedral-like workplace

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.

The deadliest aspect of volcanic eruptions is often not lava, but pyroclastic flows—avalanches of ash, gas, and rock that can move more than half the speed of sound.

The 2026 Ebola outbreak is hampered by a lack of vaccine against the species of the virus, heightening the need for rapid tests to aid in disease control.

Some renewable energy sources may weaken the resiliency of electric grids by removing outage buffers provided by coal- and natural gas-fired plants, which provide the system with more time to find a new power source if a plant goes down.

Watch how deep-sea mining equipment collects and processes polymetallic nodules—metal-rich, potato-shaped rocks—from the ocean floor and creates environmentally damaging plumes of sediments.

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

Play the role of a student in a game where you try to navigate college and remain debt-free, selecting different income levels, high school experience, race, ethnicity, and more.

Art theft is the third-largest source of criminal revenues worldwide, thanks in part to the subjective nature of valuing a work of art.

The American Society of Civil Engineers' infrastructure report card gave the US a C in 2025, its highest grade since the project launched in 1998.