The complex science of snow removal

New York City spends $429 million a year just to get rid of its trash

None of NYC's garbage is processed within the city. It is transported by truck, train, and barge to waste-to-energy facilities and landfills as far away as Ohio and South Carolina, a vast logistical operation.

Essential pipes, sewers, and cables lie buried beneath New York City

The Department of Design and Construction offers a tour of its work sites, explaining the complex systems that exist underground. Gas, electrical, telecom pipes, and many others, sprawl out underneath the entire city, with dozens of maps that help workers know where they're placed. This layout is unusual compared to the rest of the country, where wires are often present and visible above ground.

Snowfall records from every county in the US

Discover the one-day snowfall records of every county in the US in this comprehensive map. Data from the National Oceanic and Atmospheric Administration captures inches of snowfall and the year it fell the most in each county. See the contrasts between the inches of snowfall in warm southern American states and the cooler East Coast.

A fast explainer on every Winter Olympic sport

Slalom, luge, skimo: The 16 sports at the Winter Olympics aren't the most familiar to everyday audiences. They can be divided into three categories: track, indoor, and outdoor. This video breaks down each sport's rules and quirks and the variations of its events in less than eight minutes.

Learn how the Macy's Thanksgiving Day Parade comes together each year

The Macy’s Thanksgiving Day Parade is essentially a huge theatrical production spanning several long blocks in New York City rather than a stage. Naturally, organizing it is a complicated process. This podcast episode explains how the Macy’s Thanksgiving Day Parade comes together each year.

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.

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.

Making sense of the complex logistics of product returns

Americans returned over $800B worth of stuff in 2022, more than the entire gross domestic product of some nations. This entertaining, in-depth video dives into the complex logistics of the reverse supply chain and how it works. Estimates peg the...

MLB teams can travel with roughly 12,000 pounds of gear and luggage

Each of the league's 30 teams has travel directors facilitating intricate logistics to move players and luggage to the next city, often after a game and the night before another game day. This video breaks down the wild planning required.

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...

The economics of ski resorts

More than 480 ski resorts pack in nearly 65 million visitors each year in the US for historically high prices. Daily lift tickets may cost three figures at many locations. Amid industry consolidation and more stringent land use regulations, ski resorts are upping their prices—a factor that does not appear to be dampening the sport's popularity. Learn more here.

How Google Street View generates profit

Google Maps, one of the most trusted navigation applications today, has a somewhat mysterious way of making a profit. YouTuber Phil Edwards uncovers the secret economic practices of Google Street View, while also offering a deeper understanding of how it works.

Ice cream’s unfrozen consistency is thanks to sugar

Making ice cream is a complex, multistep scientific process. But the treat’s scoopable, chewable consistency is due to the product’s dissolved sugar.

The ingredients that make up severe weather

A seven-minute video illustrating how a storm is made. These factors—moisture, instability, lift, and shear—are explained through a series of data sets and creative, descriptive diagrams.

Federal spending falls into 2 categories: mandatory and discretionary

Federal spending is split between mandatory programs, funded automatically by law, and discretionary programs, funded through annual appropriations. This video breaks down which major programs fall into each category and why the distinction matters.

The Manhattan Project was one of the most expensive undertakings of World War II

Building the first atomic weapons required hundreds of thousands of workers, vast secret facilities, and enormous spending. This 1998 study details the full cost of the Manhattan Project and compares it to other major US wartime expenditures.

There are over 20,000 trees on the National Mall

Nearly 4,000 of the Mall's trees are cherry trees, all maintained by a small National Park Service arborist team that provides year-round, science-based care to address soil compaction, root damage, and heavy visitor traffic.

The internet explained at five levels of difficulty, from protocols to internet flattening

Resembling a roadway with traffic laws that all cars must follow, the internet is the hardware that connects a source to a destination, and these connections must follow specific software rules. Although data had to travel through about 10 networks to reach a destination in the past, data centers increasingly consolidate traffic, just as a highway does for cars, to improve data speeds.

How to get out of debt

This article provides a few helpful tips for getting out of debt, such as learning more about the debt itself and asking for better interest rates. It also explains the popular "debt snowball" and "debt avalanche" methods for getting out of debt. Curious to learn more? Read the full article here.

Hydroplaning occurs when a vehicle's tires lose traction on wet roads

Water depth must be over 0.1 inches, and vehicle speed must exceed 50 mph for hydroplaning to occur. Tire wear, size, and tread patterns affect the likelihood of hydroplaning, which is more common for all-wheel drive vehicles.

Newspaper delivery people, trash collectors, and more: who to tip and how much

The suggested holiday tip amount for garage attendants is between $10 and $50, whereas the suggested holiday tip amount for doormen in apartment buildings is between $25 and $100 each.

The symbol of the American lawn

Trimmed, pure green lawns are the norm in US yards and require regular mowing, fertilizing, and weed whacking to keep in order. They are cherished for their simple aesthetic and as a soft area for walking or playing near the house. Still, they are also so-called monoculture zones with only one plant species, lacking biodiverse resilience. This article traces the history of the lawn in America and the contemporary debates over its future.

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.

Permafrost, explained.

This article explains the role of permafrost—the layer of permanently frozen soil beneath the Arctic tundra—in shaping both the ecosystem and the terrain. During the summer, the permafrost keeps the soil above it moist, which in turn impacts the...

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...

Goose bumps require a surprisingly complex series of steps

Watch an anatomical breakdown of how goose bumps work—featuring real skin from a human cadaver, a segmented brain, and a detailed anatomical model of the skin—to learn about all the jargon behind goose bump science. (Warning: Includes graphic footage of cadaver skin.)

Use this tool to calculate the dollar value of your parental mental load, from meal planning to coordinating after-school care, then see resources that help generate solutions.

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

Discover the catastrophic consequences of a failure of the US electrical grid—something that is more likely than many Americans think.

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

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.

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

Before the current East Wing ballroom project, only two White House renovations in the past 100 years cost more than $10M.

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.

Scientists can determine Earth's past climate conditions by analyzing air trapped in microscopic bubbles within ice cores—columns of compressed snow layers that build up over hundreds of thousands of years.

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

About 2,000 US babies are born annually without some portion of their limbs, potentially leading to a lifetime of pricey prosthetics.

Netflix profits when you're not watching, and its movies are designed that way—read a detail-rich critical essay exposing lesser-known Netflix takes

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.

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.

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.

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.

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.

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.

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.

See this overview of the firework rules across all 50 states, ranging from a complete ban on non-professional fireworks in Massachusetts to states with more lax rules like Indiana.

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.

Watch the cumbersome, but necessary, precautions healthcare workers must take to care for and protect themselves while caring for Ebola patients.

A 2019 Facebook event called on attendees to "Storm Area 51, They Can't Stop All of Us," resulting in countless memes, the creation of a music festival, and eventually the arrests of those who did try to approach the area.

While the sun's gravity keeps the planets in orbit, their gravity also pulls on the sun, causing it and everything else in the solar system to orbit around a mutual balance point called the barycenter—the true center of the solar system.