Ledgers—what are they good for?

The blockchain offers tantalizing possibilities for future use

Think of blockchains as a running list of information, where new details are added to the running chain as discrete "blocks." With crypto, the information contained within each block could be virtually anything, providing flexibility for uses in commerce, legal filings, healthcare records, and more.

See how the concept of verification and addition to the blockchain works in real time.

Every transaction made via bitcoin is recorded on its blockchain—the decentralized, distributed ledger that provides a permanent and transparent record of the currency's entire history. While that may sound abstract, the technology allows anyone to monitor and confirm each of the transactions.

Blockchain, explained in five layers of difficulty

Blockchain, the key technology behind bitcoin, is a new network that helps decentralize trade and allows for more peer-to-peer transactions. Wired challenged political scientist and blockchain researcher Bettina Warburg to explain blockchain technology to five different people: a child, a teen, a college student, a grad student, and an expert.

Why cryptocurrency matters from Andreesen Horowitz general partner

In this hourlong video, Andreessen Horowitz (a16z) General Partner Chris Dixon discusses “Crypto Networks and Why They Matter,” giving an overview of the cryptocurrency space, the transformative implications of its technology, and the potential for cryptocurrency networks to lead a new wave of innovation.

Learn about Web3 and how it differs from past versions of the internet

Web3 is the idea of a new, decentralized internet built on blockchain technology. It aims to shift control from centralized entities like big tech companies to users through distributed ledgers and smart contracts. Key components include cryptocurrencies, NFTs, and decentralized autonomous organizations (DAOs) that operate without a central authority. Web3 promises more user privacy, ownership, and control over data and digital assets.

The role stories play in mass economic trends like bitcoin, crashes

Economics is dominated by numbers, but stories play a huge role in the emotional shifts seen within macroeconomic trends. For example, bitcoin is not just a cost-benefit winner, but a compelling tale of decentralization and independence. This is a 20-minute summary of Nobel prize-winning economist Robert Shiller's "Narrative Economics."

Why does the stock market matter?

Open any newspaper, turn on your local TV news station, or listen to a daily business radio segment, and you’re bound to hear about how the stock market is performing. Netflix created a 17-minute (free) explainer that dives deep into the nitty-gritty of how we got here.

London bankers created the first clearinghouse to process checks in 1770

Until that time, each banker was required to bring that day's checks to every other bank for settlement. Perhaps understandably, the first place bankers opted to gather to clear and settle checks was a tavern known as the Five Bells. The innovation gave rise to what would become clearinghouses, key institutions that facilitate payments.

Hear history nerd Ray Dalio talk about making decisions during times of uncertainty

For Dalio, history is the best teacher. Dalio emphasizes relying on and respecting the past as a framework for the future, so that during unsettling times, people still make good decisions.

Dive into the fascinating journey of a Federal Reserve note

Ever wondered how long an individual dollar bill lasts? After cash is designed and produced, money circulates in the economy, with $100 bills staying in use for the longest on average—roughly 15 years—and the $10 lasting just less than five.

BNPL may be adding a layer of debt that doesn't show up in economic data

Given somewhat limited regulation in the BNPL space, data about its usage is limited—many BNPL firms have resisted sharing information about user purchases, finances, and more thus far. As more people begin using buy now, pay later services, experts are concerned about whether BNPL is adding a new layer of "hidden leverage" to the economy.

A life measured on the backs of coffee receipts

Years ago, a storyteller doodled on the back of a receipt. Hundreds of doodles later, Odding Wang has created a digital diary with a tactile feel. Click through the project's website to peruse the portals into Wang's life and mind. Hovering over a comic will reveal the receipt on the other side.

Legacy electronics have prevented significant advancements in alkaline batteries

While lithium-ion batteries have increased in energy density multiple times since their commercialization in 1991 and can be sized to various capacities by connecting numerous electrochemical cells, disposable alkaline batteries have been forced to maintain their 1.5-volt standard and form factors for compatibility with existing devices.

Listen to a conversation between two Palantir cofounders—Peter Thiel and Joe Lonsdale

Palantir cofounder Joe Lonsdale was an editor of the Stanford Review (which Peter Thiel founded), and Thiel became a mentor to Lonsdale. The two discussed shared sentiments about the importance of developing Palantir to maintain a largely American global order, as well as cultural revolutions.

A company is ‘in the black’ if it is profitable

If a company is “in the red,” however, it is unprofitable. The expressions stem from the days before computers were widely used in accounting, when accountants updated financial data in their books by hand, using different colored ink (black and red) to signal a company's profitability.

Five charts that changed the world

Data visualization helps us understand the world, providing a powerful way to communicate complicated information in a quick and efficient way. There are many different ways to create graphs, and these five examples—the pie chart, geographic dot...

Why atoms are used to keep track of time and define the meaning of a second

Small variations in the production of human-made devices, such as mechanical watches and pendulums, make them unreliable for the ultraprecise timekeeping required by modern technology, including financial transaction timestamping and GPS. Because atoms obey fundamental laws of nature and never wear out, their light emissions when energized provide a consistent timekeeping signal.

There’s an artificial intelligence model trained on bankruptcy law

Although it's designed for lawyers, the tool is able to help everyday browsers synthesize important cases and point users to relevant documents about them. One sample using it asks Chatlaw to explain the significance of a recent case and then to define relevant terminology.

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

Weird ways critical minerals are being mined

Critical minerals like lithium, cobalt, and graphite are economically crucial non-fuel resources subject to supply chain risks. To diversify production, scientists developed odd ways to harvest them. This article breaks down the weirdest approaches, including extracting minerals from seawater using algae, phytomining plants, and asteroids.

Some argue that stablecoins are unnecessary due to the ubiquity of the US dollar

Others have criticized fiat-backed stablecoins for their lack of decentralization, believing that digital currencies not controlled by central banks will become more popular in the future.

Explore an alternative investments timeline

From what’s known as the first leveraged buyout, when JPMorgan acquired the Carnegie Steel Company, to the creation of the first-ever hedge fund, alternative investments have a long history.

Technological advancements are historically deflationary

Technological innovation can drive down costs and prices for businesses, which can increase real wages for employees. As a result, people have more money to spend and demand increases.

NFTs are unique assets that exist on the blockchain

This SNL skit accurately defines non-fungible tokens in a song and skit. They are cryptographic tokens that represent digital assets like art, and their value can be volatile.

How lasers have become a go-to in archaeology

Archaeological teams now have another item to pack with their trowels: Lasers. Researchers' approach to unsurveyed land has been transformed by light detection and ranging technology. LiDAR has helped archaeologists break new ground and uncover...

Britain’s bottle innovation saved Champagne

Champagne wouldn’t be where it is today without a surprising partner: 17th-century British glassmakers. An energy crisis caused by deforestation—not enough trees to burn—led to the search for an alternative fuel source. Enter coal. The plentiful resource burned much hotter than wood, creating stronger glass that could stand up to the pressure of the carbon monoxide produced by the wine’s second fermentation and solving one of the fledgling industry’s most vexing problems.

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

Memecoins are a type of cryptocurrency—a form of digital currency with a wide variety of uses—created around popular 'memes,' or viral internet jokes.

The Mona Lisa's celebrity status and repeated restorations have obscured what made the painting so revolutionary for its time

Learn how to read a prospectus, the juicy document that any company must file with the SEC before going public.

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

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.

The US dollar is the most widely circulated currency in the world, and is involved in nearly 90% of global transactions

Sony set the standard for cylinder-shaped batteries when it repurposed manufacturing equipment used to make rolls of magnetic recording tape.

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

Warren Buffett's former professor Benjamin Graham is known as the 'father of value investing,' a strategy in which investors seek to buy stocks trading below their intrinsic worth.

After the Boston Tea Party, colonists switched to coffee, which became the main morning drink for revolutionaries.

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

One disco producer saw 'Star Wars' four times on its opening weekend and was so inspired that he recorded the album 'Star Wars and Other Intergalactic Funk,' which produced a chart-topping single.

Long before Major League Baseball began allowing instant replay for balls and strikes, an umpire reluctantly used the technology to determine whether a hit was a home run, a move that inadvertently ushered in a new era for the sport.

Studies suggest when you sleep is as important as how much you get, and syncing with your circadian rhythms may lead to less fatigue and improved long-term health outcomes

According to the physics of black holes, our 4D reality may be a hologram—a projection of information coded on a 2D surface on the edge of the universe.

Learn how monoclonal antibodies, which mimic the body's antibodies, can fight diseases like Ebola.

The rivalry between Alexander Hamilton and Thomas Jefferson centered on federalism—the question of how much power the federal government should hold relative to the states.

Telehealth demand for GLP-1s for weight loss is booming as consumers seek easier access.

The first steps to rebuilding your credit score include getting to know exactly what's on your credit report and figuring out how far you are from the '700 club,' or 'good score' range.

This site reaches millions of visitors who are tired of AI chatbots and seeking human connection. Pretend to be an AI chatbot and ask questions, provide answers, and draw for people in real time.

The term 'algorithm' originated from the Latinized name of al-Khwārizmī, a 9th-century mathematician whose works introduced Arabic numerals and the decimal-based numeral system to Europe and whose treatise 'Al-Jabr' gave algebra its name.

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

Fish populations in the Great Barrier Reef have increased after installing waterproof speakers on the ocean floor that played recordings of sounds from healthy coral reefs.