The 10 most important (other) cryptocurrencies

Bitcoin is the oldest and most popular cryptocurrency

Bitcoin is a digital cash alternative introduced in 2009 that rapidly grew in popularity and now boasts a global user base. Enthusiasts point to bitcoin’s decentralized nature—meaning it is not created or controlled by any central government—lending it several potential advantages.

An up-to-date, complete ranking of coins by market cap and their current value

As of this writing, the top three cryptocurrencies ranked by market cap are Bitcoin, Ethereum, and XRP, in that order. Dogecoin, the first-ever "memecoin," was created as a joke in 2013, and it's now the ninth-most valuable form of cryptocurrency in the world.

Cryptocurrencies are forms of digital currency

Cryptocurrency's key feature is decentralization. Unlike traditional money, they generally aren't controlled by a single authority. As of early 2025, cryptocurrencies had a cumulative market cap of almost $3.4T, making them worth more than some of the world's most valuable companies, like Google and Amazon (both valued at roughly $2.3T).

A definitive guide to crypto and blockchain

The concept of cryptocurrency emerged more than a decade ago, with a famous whitepaper on bitcoin. To fully understand the rise of bitcoin, Bloomberg’s Matt Levine developed this comprehensive four-part series exploring the broader crypto and blockchain ecosystems, where they came from and how they work (subscription required).

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.

Since its introduction, the price of bitcoin has experienced significant volatility

Driven in large part by speculation and intense social media attention during the pandemic, along with the availability of capital during near-zero interest rate periods, the price has seen at least three major crashes despite steadily increasing over the long run since 2014.

Want to begin trading in cryptocurrency? Check out these exchanges

Explore the current cryptocurrency market. CoinMarketCap tracks 242 spot exchanges where various cryptocurrencies are traded. Newbie and experienced traders will find timely exchange ranks and scores charted according to traffic, liquidity, and trading volumes. CoinMarketCap promises legitimacy in all trading volumes reported.

The industries ripe for disruption by blockchain and cryptocurrencies

Blockchain—what is it good for? Lots of things, it would seem. Peruse this guide from The Motley Fool site and learn about different applications and use cases for blockchain technology. Financial exchanges, real estate, insurance, voting, an gambling are just a few of the 15 applications discussed here.

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.

A list of major companies that accept cryptocurrency as payment

Have a fistful of Bitcoin? SpendMeNot provides a fascinating infographic that shows which companies currently accept the cryptocurrency. If you want to know where you can engage in Bitcoin transactions, this extensive resource directs you to the right merchants. Food, jewelry, banks, travel services and more are all represented here.

Worldwide cryptocurrency heists tracker

A look at the biggest cryptocurrency heists, be they from an exchange, smart contract, or a business, including amounts, methods, reparations, and consequences.

Top Ethereum dApps

Thousands of decentralized apps (dApps) run on Ethereum, including marketplaces, financial platforms, and social networks. Top apps include Uniswap, a decentralized exchange for buying and selling cryptocurrency, and OpenSea, the biggest marketplace for buying and selling non-fungible tokens (NFTs). New apps are built on Ethereum all the time, facilitating billions of dollars worth of transactions. Explore the biggest ones here.

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."

Cryptocurrency wallets for beginners

Cryptocurrency wallets come in many types. Here, we present the details, comparing the wallets’ features so that you can choose the best crypto wallet for your needs.

A unique art piece became the most expensive NFT when it sold for $92M

Non-fungible tokens sold for millions of dollars during their popularity peak from 2021 to 2022, with the top ten most expensive NFTs all costing upwards of $7M.

Two Papa John’s pizzas were the first real-world transaction involving cryptocurrency

In 2010, a programmer Laszlo Hanyecz made the first real-world transaction involving cryptocurrency—purchasing two Papa John’s pizzas for 10,000 bitcoins. While the transaction was lauded as a milestone for cryptocurrency, it has also become a tongue-in-cheek cautionary tale—the value of the purchase price exceeded $620M at bitcoin’s all-time high.

The different types of stablecoins include algorithmic stablecoins

In addition to fiat-backed stablecoins, commodity-backed stablecoins, and cryptocurrency-backed stablecoins, algorithmic stablecoins use smart contract-based mechanisms to maintain a stable value by responding to supply and demand.

The iPhone's impact in 10 charts

It's been almost 20 years since Steve Jobs first unveiled the iPhone, the device that would come to define Apple for years and change not just the smartphone industry but the world at large. 10 examples of the iPhone's impact include its all-screen touch interface and the way it led to the rise of app culture.

Alternative investments have become more popular since the 2008 financial crisis

When the traditional markets crashed during the 2008 financial crisis, many people saw the value of their traditional investments plummet and began to look into alternatives as a result.

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

The original 'four horsemen' of tech were Intel, Dell, Microsoft, and Cisco

These companies became known as the "four horsemen of tech" for the influence the companies had both on other businesses and investors in the late 1990s and early 2000s. The expansion of internet infrastructure throughout the 1990s and the dot-com bubble lifted these companies to incredible heights.

The New York Public Library reveals its 10 most checked-out books of all time

In the library’s 125-year existence, these were the 10 most popular books — and one book that isn’t on the list, but should be.

The US dollar has served as the world's reserve currency for 80 years—but is its dominance coming to an end?

Since the establishment of the Bretton Woods economic system, about 90% of global foreign exchange transactions have involved USD. Although no viable alternative exists yet, the dollar's share of central bank reserves has decreased from 73% to 58% from 2001 to 2024, and President Trump's 2025 tariffs have sped up this trend.

20 of the most common cyberattacks

While there are dozens of different types of cyber attacks, this article explains the top 20 most common network attack examples, including phishing, whale-phishing, and spear-phishing attacks. Learn how to best protect yourself.

The world’s top 10 hedge funds

The world’s top 10 hedge funds based on total assets under management include Ray Dalio’s Bridgewater Associates and Citadel.

One of five competing qubit technologies may usher in the quantum computing era

No winning qubit technology exists among photonic networks, superconducting circuits, spin qubits, neutral atoms, and trapped ions. Each has significant limitations and unique advantages, such as neutral-atom systems' ability to maintain quantum states for several minutes, far longer than the others.

40 key stock market terms, explained

Liquidity. Forex. Capitalization. Blue chip stocks. These are just a few pieces of stock market vocabulary most people who don't spend all day on a trading floor might not know. Thankfully, we found a fun infographic that makes it easier to learn what 40 key stock market terms mean and why each of them matters.

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%.

While the first exchange-traded fund (a 'basket' of different assets that can be bought and sold on a stock exchange) in the US only launched in 1993, the global ETF market has grown to more than $10T in the short time since.

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

Explore a list of the 100 best novels of all time, compiled by some of the world's best living writers, including Salman Rushdie, Stephen King, and Jennifer Egan.

See a ranking of the best (and worst) Federal Reserve Chairs since 1914 out of the 16 men and women who have held the office since.

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.

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

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

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.

See 33 images that became central to huge scandals, including a young Charles and Camilla, Michael Jackson's baby on a hotel balcony, and Hugh Grant's mugshot.

'Silent' fireworks have gained more interest in recent years as a quieter celebratory option.

View the ten deadliest tornadoes in US history.

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

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

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

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.'

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

Most of the observable universe's volume consists of voids and supervoids—enormous regions of space with little to no galaxies, stars, or light.

Animal phobias are likely the most common type of phobias, followed by an extreme fear of heights.

See photos of Meteora, a mountainous site in central Greece, home to 14th-century monasteries perched atop soaring outcroppings.

Iran's Revolutionary Guard Corps is independent of Iran's regular army and is one of the most powerful and influential military-political organizations in the Middle East.

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.

Corals are themselves not coral reefs—the term refers to the tiny marine invertebrates that build the rigid reef.