Thousands of quarters and huge water bills: the economics of laundromats

The United States had a washing machine that cleaned dirty dollar bills

In the early 1900s, the US Treasury Department had a machine that washed and ironed old, soiled paper bills. The machine helped the Treasury save money by decreasing printing costs for new dollar bills, but had nothing to do with the modern understanding of money laundering.

Local governments are responsible for more than 148,000 public water systems across the US

From large municipal utilities to small rural systems, local governments are tasked with providing clean water to almost every American community. The US operates over 148,000 public water systems.

What to do about the microplastics in your laundry

Synthetic fabrics shed millions of tons of microplastics into oceans each year, largely through laundry wastewater. Here are ways to reduce the pollution.

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

In 2014, there were more payday loan stores than McDonalds

That year, there were more than 20,000 payday lenders in the US, according to the St. Louis Federal Reserve, and 14,267 McDonald's locations. Politicians and consumer advocates frequently cited this statistic as a selling point for increased regulation.

Some banks derive half of their income from overdraft fees on checking accounts

The fees are incurred when a customer withdraws more money than is left in the account, typically around $35 per overdraft. One in 11 Americans pays more than $350 a year in such fees, generating tens of billions of dollars each year for banks..

Ranking the most expensive appliances on your electricity bill

Energy costs have gone up amid war and inflation. Here's a breakdown on the cheapest and most expensive appliances in your home to help you lower your bill.

Why some US cities pay thousands of dollars for a single public trash can

The rationale supposes high-end, heavy-duty trash cans reduce litter and maintenance costs, justifying per-unit costs of close to $3,000 in some municipalities. But results are mixed, and some experiments using cheap 55-gallon drums were similarly effective.

The adoption of modern appliances led to the soap opera's rise

Soaps grew more popular as they transitioned to television in the 1950s. At the same time, the adoption of modern appliances like the automatic dishwasher and the clothes dryer offered housewives more free time, which soaps could now occupy. By 1970, CBS, NBC, and ABC were airing 18 daytime soaps.

It takes an average of 14 days of work to afford a monthly mortgage in the US

This map of the US shows the number of eight-hour workdays it would take to afford a monthly mortgage payment in each state. Specifically, the calculations are based on median hourly wages in each state, as well as a 30-year mortgage, 5.8% mortgage rate, and a 6% down payment.

How much your blood really costs

In the US, donating plasma twice a week can earn you $400 a month. But this system only works by targeting people who need the money most. Plasma clinics are placed in low-income zip codes, and frequent donation may increase health risks.

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.

Americans spent $6.6 billion on body odor products in 2023

This high figure from Euromonitor, a research firm, suggests Americans spent more on deodorant than in any other country. Beyond deodorant, there's also growing interest in "whole body" deodorant designed to mask smells from various parts of the body beyond the armpit.

An estimated 91% of all Americans had used a coupon at least once as of 2022

Coupon use accelerated during the Great Depression, when the US unemployment rate reached nearly 25 percent. While coupons were invented in the late 1800s, they became more popular during the Depression as a way to stretch household budgets during the era’s economic hardships. Companies soon began distributing coupons via newspapers and women’s magazines.

The squeegee kids of Baltimore

For decades in Baltimore, youth looking to earn some money have waited at high-traffic intersections to offer quick windshield washes for a fee. While some drivers find it encouraging, a positive way to spend time, others get annoyed, resentful, or...

Roughly 10% of US apartments were owned by private equity firms as of 2025

Almost half of those apartments were purchased after 2021. However, local community groups across the country are experimenting with ways to put residential and commercial real estate in the hands of community members.

Women tend to tip more often than men

For instance, among people who visit hair salons or barber shops, 62% of female respondents said they always tipped. Only 45% of men said the same. This article includes more takeaways and stats about how Americans tip, and who receives them.

Roughly 43 million US borrowers owe roughly $1.7T in student debt, the second-largest source of consumer debt behind mortgages.

After the owner fell into a Ponzi scheme, one braiding shop in suburban Maryland began making $130K a day by staying open for 24-hours

Because braiding often takes a long time, the salon prioritizes fast, efficient styles, with two braiders often working together on a client, which increases revenue by increasing turnover. The salon has 120 seats and more than 400 contracted braiders across its 10,000-square-foot space.

Dollar stores procure their merchandise in bulk to help cut costs

In order to keep prices cheap, dollar stores source this merchandise from a variety of places, including liquidation sales (an event that happens when retailers need to sell off inventory quickly), directly from distributors, foreign markets, and more.

Prison money diaries: the thriving underground economy behind bars

How people in prison earn money, how much they spend, and the lengths to which they go to secure basic needs and comforts.

The bathroom upgrade that might increase a home's resale value

When deciding what to improve during a home renovation, people often think about their home's future resale value. Now, real estate experts are claiming that adding a luxury shower might provide the most bang for your buck in the renovation department. Learn more in this article.

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.

More than $100M in scholarships goes unclaimed each year

More than $50B in scholarships are awarded each year, though analysts estimate more than $100M goes unclaimed due to a lack of qualified applicants. That fact should be unsurprising given the dizzying number and criteria for thousands of applications. This portal from the US Department of Labor lets you quickly search more than 9,600 scholarship opportunities by program, eligibility criteria, and more.

Who cleans the London Underground at night?

The London Underground, also known as the Tube, services millions of people every day. After the transit system closes each evening, a crew of workers known as “fluffers” gather to clean the underground tunnels. This article sheds light on these unnoticed cleaners, covering the difficulties of their jobs and the bizarre things they’ve encountered, from ghosts to nesting pigeons.

The surprising economics of sushi

How exactly does a patron of a sushi restaurant in Omaha, Nebraska, get to eat fresh fish caught off the coast of Japan? This episode of the Freakonomics podcast answers this question and explains the impressive feat. Listen to learn about the tricky economics and time-sensitive process behind importing fresh catches to sushi-lovers across America.

The dating app industry's average customer acquisition cost exceeds $40 per user

This relatively high cost of customer acquisition (according to 2022 data from saturated markets) makes profitable growth increasingly difficult for dating apps, which is why many have pivoted to focusing on their subscription tiers for reliable revenue.

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.

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.

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

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

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.

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

A vending machine run with Anthropic's AI went out of business after it was convinced to give away items for free and sell a video game console.

When a Paris department store hesitated to sell Estée Lauder's perfume, she 'accidentally' broke a bottle, causing the smell to spread throughout the store and shoppers to start asking to buy the scent.

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

Mark Twain spent decades feuding with the US Postal Service, convinced its costs and regulations were bureaucratic overreach.

The Nasdaq's 'Magnificent 7' companies are responsible for roughly 40% of the Nasdaq 100 index's gains, while the remaining 93 companies account for the other 60%.

Apollo astronauts left items in the moon's 'toss zone,' including golf balls, family photos, and bags of human waste, to make room for lunar rocks.

Louisiana's 'Cancer Alley' is infamous for having some of the highest industrial pollution, toxic air emissions, and cancer risks in the US.

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.

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

While El Niño moves warm Pacific Ocean waters east along the equator, La Niña moves them west, shifting where rainfall will become more common for months.

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

44% of Americans say they pray at least once a day—discover how your state's religiosity stacks up against the rest of the country.

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.

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

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.

A small portion of The Winstons' 'Amen, Brother,' an obscure '60s gospel record, is the basis for thousands of hip-hop tracks, making it one of the most sampled records ever that's informally known as 'the Amen break.'

Planarian flatworms are small, aquatic worms with exceptional regenerative capabilities. When cut, the worms can regenerate multiple bodies in a matter of weeks.