Fire engines are among the most complex vehicles on the road

How fighting wildfires works

Firefighters use sophisticated strategies to control wildfires that sometimes cover thousands of acres. This video breaks down how teams set up fire lines to isolate the fires by cutting down brush and trees around the existing fire, among other...

How fighter jet ejections work

One of the most complex pieces of equipment in a fighter jet is the pilot's ejection apparatus, and the process of ejecting is far more challenging and violent than its depicted in film. This six-minute video breaks down the protocol step-by-step.

Visualize the components of fireworks

This article provides animated diagrams depicting how different parts of fireworks function. The elements work together through timed mechanisms to produce desired effects.

The hidden engineering of gas stations

Contemporary gas stations are the result of a century of engineering progress. In the early 1900s, only a few thousand cars drove around, and they used kerosene. As vehicles and cheaper gasoline became more popular, fire hazards grew, forcing the invention of fuel pumps, underground storage tanks, and the automatic shutoff valve—all engineering marvels.

Go behind the scenes of a 911 dispatch center

This video follows a dispatcher at a Colorado communications center serving over 1,600 square miles across four counties, showing the constant communication and relentless pace of a 24-hour shift on the other end of your emergency call.

See how the presidential motorcade protects the president on the move

This video breaks down how the motorcade—anchored by the armored limousine known as "the Beast"—operates as a mobile security network. An animated simulation shows how agents and vehicles respond to potential attacks to keep the president safe in transit.

Watch how engineers salvaged almost every sunken ship at Pearl Harbor

This four-part video series explains the massive effort to raise, repair, and refloat the Pacific Fleet—detailing the engineering challenges, diving operations, and months of around-the-clock work that restored all but three damaged ships to active service.

Learn how your body is, scientifically, like a firework with its own slow, controlled burn.

The complex science of snow removal

Plowing snow seems simple, but its actually a technically complex task and requires significant logistics, patience, and funding. New York City's 19,000 miles of roads require days to plow at a cost of $12M per inch of fallen snow, and roughly 17 million tons of salt were applied to road surfaces across the US in a recent year. Dive into the details of snow removal with an in-depth and funny video.

F1 pit crews change tires in less than 3 seconds

Roughly 16 people cooperate in a highly coordinated sequence of events to swap tires mid-race without losing the driver any time. Watch a slowed-down explanation of each person's job in the crucial pit lane moment.

Electric vehicle systems run on five key components

The system is made up of a charger—converting AC into DC—a battery, a power control unit, motor(s), and a single gear. A complex gearbox is not needed because electric motors are efficient at operating across a range of speeds.

Most Mardi Gras floats are constructed from foam and papier-mache

The moving sets were originally drawn by mules and made of wood. Now, they're motorized and intricately crafted from foam and papier-mache. This virtual tour of Mardi Gras World—a New Orleans warehouse responsible for floats for various krewes, as well as for Disney and Six Flags—showcases their vibrant designs.

Explore 14 iconic self-driving cars from television and film

From the heroic KITT from "Knight Rider" and Batmobile from "Batman" to the demonically possessed Christine from Stephen King’s "Christine," many of the vehicles on this list are examples of how classic cars have been personified in media.

Fascinating 3D animation shows how Romans built roads

Highly efficient engineering and materials production allowed Roman administrators to lay down nearly 50,000 miles of roads across the ancient empire. These roads were built so effectively that many are still around today. Watch this quick 3-minute video to see how they did it.

The complex production machine behind Eurovision

This short Wall Street Journal documentary goes behind the scenes at Eurovision to show how the elaborate stage show—which features a production manager, speedy run crews, and a digital floor outlining the location of every prop for every performance—hums along so smoothly.

America's first trained EMT service was established in Pittsburgh's inner city

Watch this documentary about the Freedom House Ambulance Service—the foundation for all paramedic training in America. Founded in 1967, this emergency care force composed of Black men and women from Pittsburgh sought to respond to Pittsburgh's Black community emergencies when the Black community couldn't rely on the police and fire departments to consistently respond to their emergency calls.

NASCAR automobiles have become significantly more complex over time

The first generation of NASCAR automobiles were nearly identical to on-the-street models, with no modifications allowed to the body or frame. They even raced with doors. Fast-forward 75 years and the cars are 670-horsepower machines designed for racing.

How tea gets made

Tea is one of the most consumed beverages in the world, and this video walks us through the process of supplying it from farms to our mugs. Workers handpick leaves, ferment them, and dry them as part of this involved operation. Follow along for a scientific understanding of the many steps it takes to produce tea and appreciate the detail and effort to create its flavor, aroma, and color.

An interactive dive into the immune system

Our bodies are equipped with an incredible system able to fight off invasive pathogens to protect us from illness. The complicated system includes lymph nodes, the spleen, bone marrow, and even the tonsils. But this same system can turn against itself, a condition known as autoimmune disorders. Follow along with this thorough, engaging explainer on the human body's defense system.

Bank runs, explained

A major feature of the modern financial system is trust: if an institution loses it, customers will quickly withdraw deposits and stockholders will sell their shares. This digestible animated video looks into the nature and history of bank runs and...

Manholes connect underground sewer and water drain pipes

Wherever a portion of sewer is connected to another, a manhole is built. These serve both as access points for maintenance and as connectors for the system. This video shows how crucial manholes are for proper sewer functioning.

Why scientists are making robot insects

Insects have much to teach us about flying, jumping, moving quickly, and more. So, roboticists are studying how insects do the ridiculous things they do, like walk on water or jump fifty times their body height, to inform their design and engineering of a new slate of robots: tiny ones. Learn the future of this type of robot with this fascinating video with insights into both insects and robots.

How heart transplants work

Heart transplants require an old heart to be removed and a new one to be installed without killing the patient. How does that work? In this easy-to-understand five-minute video, learn each step of the intricate process, from donor matching to the preservative solution a heart is doused in while it is transported.

Why crash test dummies cost a million dollars

Crash test dummies are crucial in the fight to protect car passengers from potentially catastrophic crashes. So how are they made? And why are they so expensive? This 8-minute video breaks down the high-tech products—which can cost over $1 million...

Protein content and multiple fermentations create beer foam stability

Single-fermentation beers rely on protein viscosity for foam, with lipid transfer proteins transforming into stabilizing structures during fermentation. Scientists believe foam research may result in safer lubricants for electric vehicles.

The Space Launch System: NASA's most powerful rocket ever

The Space Launch System is intended to be the most powerful rocket ever built by NASA. Possible missions include returning to the moon and perhaps even reaching Mars. This speculative and mostly silent video uses animation to explore the inner workings of the SLS, showing it launching and in space flight.

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.

When you complete a CAPTCHA on a website to prove you are human, you may be unknowingly training algorithms for self-driving cars, whose systems require training data to help identify crosswalks, bicycles, and other outdoor objects.

Massive 3D printers have been used to build homes by stacking layers of 'concrete toothpaste,' a fire-resistant material that effectively insulates against outside noise.

In 1984, Operation Smash Hit intentionally crashed a 239-ton train into a nuclear waste canister at 100 miles per hour to prove the canister's safety, which remained completely intact and lost just 0.29 of its 100 pounds of pressure.

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.

Watch this video that uses Lego bricks to explain how venture capital works.

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.

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.

In 1915, workers recovered a submarine-like vessel from the Chicago River, prompting fears of German espionage

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 United States is one of only around two dozen countries with a fully federal system of government, in which power is divided between national and state governments.

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.

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

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.

Hedge funds, the private investment firms that trade a wide swath of financial assets, make money by imposing steep fees on investors and from the fund's investment performance.

Browse a detailed visual analysis of over 200,000 similes—comparisons that often use 'like' or 'as'—from popular fiction to see how frequently writers the same idiomatic expressions.

Explore an interactive map of battles from the American Revolution, along with detailed summaries of each engagement

See how Budweiser's famous Clydesdales spend their days at Warm Springs Ranch, where roughly 70 to 80 of the beer brand's giant horses can be found at any given time.

Hear about the 250-year history of the United States Postal Service, complete with some of its strangest deliveries, important innovations, and the figures that made it an American institution.

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

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.

Pure water does not conduct electricity because this flow of energy requires the movement of charged particles, and water is a neutral molecule.

Three Ebola species are responsible for most large outbreaks of the disease, yet the only approved Ebola vaccine is known to work against just one of them.

Hear 50 years of iconic hip-hop samples, the genre's foundational looped tracks