The world spent up to $600B to avert the Y2K computer glitch

Read an oral history of the Y2K panic

This oral history brings together programmers, engineers, and officials who first identified the date flaw and then spent years alerting the public to the danger and racing to repair millions of lines of code.

A Y2K glitch billed one VHS renter $91,000 for a movie

At a video store in upstate New York, a date rollover error marked a customer’s 1999 rental as 100 years overdue, resulting in a $91,250 bill. The store quickly fixed the bug and gave him a free rental as consolation.

The Year 2038 problem is the next potential computer time rollover bug

Many older systems store time as a signed 32-bit integer counting seconds since Jan. 1, 1970. That counter maxes out on Jan. 19, 2038—overflowing into negative time and sending clocks back to 1901, potentially crashing any older software that depends on accurate dates.

Time magazine ran a cover story titled 'The End of the World as We Know it?' in January 1999

In January 1999, Time published a dramatic Y2K cover with apocalyptic imagery and dire headlines. The portrayal likely exacerbated public fear and magnified the crisis in the popular imagination, turning a technical issue into a cultural panic.

Dot-com companies paid $44M for Super Bowl ads in 2000

During the 2000 Super Bowl game, 17 dot-com companies paid $44M total for ads. Just the next year, only three dot-com companies ran ads in the game. The significant drop reflects just how hard the crash hit dot-com companies and how unsustainable the businesses were.

Explore the cost of major viruses and other malware incidents through 2017

The first significant malware was the Morris worm in 1988, which caused an estimated $10,000 to $10M in damage to computers. With $38B in damage caused, Mydoom is the most costly piece of malware in history. Spread via email and, at one point, accounting for about 25% of all messages sent worldwide, the malware infected computers to create a botnet that launched cyberattacks.

In 2025, American tech companies will spend $300B to $400B on AI

That is, in nominal dollars, more than any group of companies has ever spent to do anything. Notably, these companies are not remotely close to earning $400B on artificial intelligence.

Grace Hopper warned against prioritizing hardware purchases in future computing

Foreseeing the rising volume of data and the increasing demand for its processing and access, she advocated that organizations first map the total flow of information they require and then choose infrastructure to support it, rather than wastefully spending on the fastest computing technology and forcing software to compensate for unnecessary hardware or incorrect data.

The first computers performed calculations using lightbulb-like tubes

Before transistors, the first electronic computers relied on vacuum tubes—components that switched signals on and off. Despite machines like ENIAC—the first programmable, general-purpose, electronic computer—utilizing nearly 18,000 tubes that generated massive amounts of heat and frequent failures, they laid the foundation for modern computing hardware.

Mental illness in the US costs roughly $282B annually nationwide

That figure, estimated as part of a 2024 Yale analysis that aimed to better understand the macroeconomic implications of mental illness, included the costs of mental health treatment, income loss, and overarching economic setbacks associated with mental illness.

The 2024 Synapse collapse took $90M of people’s life savings with it

In 2024, a banking middleman called Synapse declared bankruptcy. Unfortunately, it also locked roughly 100,000 Americans out of their own money, which prompted a class action lawsuit.

A timeline of how Claude Code was used to execute cyberespionage

In September 2025, a Chinese state-sponsored group targeted 30 large tech companies, financial institutions, chemical manufacturing companies, and government agencies by manipulating Claude Code, having succeeded in infiltrating a small subset. The cyberattack is believed to have been the first of its scale carried out without major human intervention.

The cost of maintaining aging voting systems

A joint analysis from the Brennan Center and Verified Voting finds that replacing aging voting equipment will cost hundreds of millions of dollars.

Minor technology failures can spiral into massive internet outages

A mix of centralized cloud infrastructure and legacy protocols leaves the internet susceptible to downtime from minor cyberattacks or software bugs, infrastructure damage caused by extreme weather, and human error if a DNS service provider—the internet's phone book—or a backend system, such as Amazon Web Services, were compromised.

In 2019, a laptop loaded with six of the worst malware in history and described as 'an exhibit of historical weaponry' sold for $1.3M.

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.

How the internet became the World Wide Web: a visualization

The internet was officially born in 1983 and had more than 150 million global users by 1997, creating an international web of seemingly separate networks. This data visualization shows the growth of the internet from 1997 to 2021. Data in this...

Within an 18-hour period in 1974, 13 states were hit by 148 tornadoes

From April 3-4, a tornado outbreak killed over 300 people and caused $600M in damage ($3.8B in 2024 dollars). The event revealed deficiencies in various technologies, including crude radar imaging and slow typewriter-based communication systems, which quickly bottlenecked and became outdated as tornado watches became tornado warnings.

Bill Gates and Paul Allen were childhood friends before founding Microsoft

The two bonded over a teletype terminal at their school, which required a $40 hourly fee for computing time. They were banned from using the device after exploiting a bug that allowed them to bypass the fee, only to be later offered free computing time for finding more bugs.

Think we decoded the genome in 2000? Nope. It was 2022.

Two decades after the draft sequence of the human genome was unveiled to great fanfare, a team of 99 scientists has finally deciphered the entire thing. They have filled in vast gaps and corrected a long list of errors in previous versions, giving us a new view of our DNA.

In 2024, the period between Thanksgiving and Cyber Monday saw 197 million shoppers

Some argue Black Friday has gone from one day of the year, to two days of the year, including Cyber Monday sales, to, more recently, an entire week. In recent years, companies have offered steep discounts for a week at a time rather than just one or two days.

Elk Cloner, the first computer virus to spread in public, was written as a practical joke by Richard Skrenta, a Pittsburgh high school student.

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.

Government shutdowns, 101

Roughly a quarter of the US federal government's spending must be approved annually through a set of 12 appropriations bills in Congress. When they aren't, a government shutdown ensues, where federal agencies are legally barred from spending any further money on nonessentials. This explainer covers the basics of government shutdowns and their impact on the broader culture.

How much money you'd have now if you bought bitcoin years ago

Do you ever wonder how much money you'd have now if you bought bitcoin in 2019? 2018? 2017? This calculator provides the answer. Plug in the amount of bitcoin you would have purchased, plus the year and the currency.

IBM helped turn Rio de Janeiro into a smart city before it hosted the World Cup

In response to the deadly floods and mudslides in 2010, Brazil and IBM developed a multimillion-dollar plan to modernize Rio's emergency management infrastructure. An operations center utilizes advanced weather forecasting, surveillance, and real-time data to surveil and respond to events such as severe storms more accurately.

British economist John Maynard Keynes originally proposed a global currency called the bancor

Keynes—one of the chief architects of the Bretton Woods system—proposed establishing a global central bank that would issue a new international currency, the bancor, to settle trade imbalances. The idea was rejected in favor of the US dollar serving as the main currency of the international system.

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

English mathematician Ada Lovelace wrote the first computer algorithm a century before computers existed and hypothesized that computing devices would one day be able to compose music—foreseeing the generative AI systems of today.

Calculate how much of your tax dollars go to each federal program based on your income, filing status, and number of children

Radioactive elements can introduce software errors because the ionizing radiation they produce can detach electrons from atoms, and computer code relies on the distribution of electrons.

Electrical grids worldwide must double their power delivery capacity by 2050 to meet surging demand from AI and electric vehicles.

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

Fireworks-related ER visits are on the rise—in 2024, they increased by 52% as compared to the prior year.

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

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

The most expensive ad of all time was for Chanel No. 5 perfume and cost roughly $33M to produce in 2004—about $57M in today's dollars.

The name 'Silicon Valley' arose from the founding of Shockley Semiconductor Laboratory in Fairchild Semiconductor in 1956-57, founded near Stanford University in Palo Alto

The idea for the Federal Reserve was conceived in secret in 1910—with bankers donning duck hunt gear for disguise while traveling to a remote country club on Georgia's Jekyll Island

Search a massive database of over 4 decades of clues from the TV quiz show 'Jeopardy!'

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

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.

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

Sears sold DIY house kits starting at $600 in its famous catalog from 1908 through the 1940s, resulting in roughly 10,000 'Sears and Roebuck houses' being built.

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.'

The US first hosted the World Cup in 1994, a tournament that lives in soccer infamy for its poor planning and the murder of Colombian player Andres Escobar, who'd accidentally scored on his own net.

Explore chaos in this simulation of two double pendulums, where small differences in the release angles produce wildly different outcomes.

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

A Yale student wrote a profound essay about the consulting industry's influence on elite college students that was published in a book of her writing after she died in a post-graduation car accident.

Domino's Pizza's 30-minute delivery guarantee was responsible for the chain's 1980s surge, but it was discontinued after the company was found liable for delivery driver accidents.