The Elo rating system allows you to compare teams across history

Learn how the algorithms behind Tinger, Bumble, Hinge, and other dating apps work

Formerly based on the Elo rating system, which ranks chess players, the Tinder algorithm is built on user data, with more time spent on the app providing more data on user preferences from which to customize potential matches. OkCupid's match percentage algorithm relies on overlaps in users' search preferences and responses to a subset of over 4,000 questions.

Some critics say comparing chart rankings across decades is meaningless

Although Billboard’s charts are presented as objective measures of a given song’s popularity, the company’s changing methodology (alongside changes in technology and listener habits) has made weighing chart success from different eras an imperfect science.

The top 100 players in baseball history

More than 20,000 players have played in Major League Baseball since the 1870s, many passing in and out of the memory of even die-hard fans. While necessarily subjective, these rankings based on votes from baseball writers ranks those whose greatness left a lasting impression. From Barry Larkin (No. 100) to Babe Ruth (No. 1), explore the top 100 baseball players over more than a century.

Where you fall on the sports misery index

Only one team can win it all each season, which means the majority of fans are disappointed. This bot mines the data on how your teams have performed in recent years and measures your misery index (the higher, the more miserable).

The best Eurovision winners of all time

The contest has been around since 1956 and has amassed an impressive catalog of winning songs in that time. This list from The Guardian ranks them all, allowing you to time-travel through 70 years of Eurovision.

Explore rankings of large language models

The SEAL LLM Leaderboards provide benchmarks for LLMs by assessing them against agentic, frontier, and safety tasks, providing insights into each model's strengths, deficiencies, and failures.

Behind the Ryder Cup, the tournament that features golfers playing for their home countries

Established in 1927, the Ryder Cup is unlike any other tournament. The scoring includes a mix of fourball, foursomes, and singles, with half-points for ties. Explore the rich history of the Ryder Cup in this detailed interactive. Each era of history includes detailed accounts of the match, historic photos, and the final score for each team.

Magnus Carlsen became world champion at just 22 years old

Norwegian prodigy Magnus Carlsen won the World Chess Championship in 2013 at age 22, one of the youngest champions in history. He went on to dominate for a decade, peaking at an Elo rating (a modern measure of chess ability) of 2882—the highest ever recorded.

David Stern reimagined the NBA Draft to make it more competitive

When David Stern took over as commissioner in 1984, he watched multiple teams lose on purpose to get the top pick in a stellar draft class. The next season, Stern changed the process to a lottery, where every nonplayoff team has an equal chance at the first pick.

Charting how many Olympic tickets are sold

This chart compares the total number of tickets sold for Summer Olympic sporting events with the number of tickets available. The article sources the data from the International Olympic Committee website and goes back to the 1984 Games in Los Angeles.

There are 32 teams in the NFL

Click a team's name to see their current record and opponent for the day; read the latest news, including injuries; view the remaining schedule; find out where the team is in the standings; discover the current roster; explore all player and team stats; and watch the latest video highlights.

Self-driving formula cars race in the Abu Dhabi Autonomous Racing League

The league and high-speed versions of traditional cars help to showcase the capabilities of driverless vehicles and the reliability of their AI systems. Leonardo da Vinci first imagined the idea for such machines in the 16th century.

The hour originated from an ancient Egyptian astronomical system

The movements of astronomical objects, measured in a day and a year, form the foundation of our sense of time. The Egyptians divided each day and night into 12 time eras, using arbitrarily selected stars as references rather than movements of specific celestial objects.

An 1844 chess match via telegraph anticipated the game's online popularity

The late November match pitted two local rival chess clubs from Baltimore and Washington, DC, against each other. The moves were transmitted over the Baltimore-Washington telegraph line, which had just been installed the previous May.

See data measuring the emotional range of Meryl Streep

With nearly a century's worth of ceremonies and winners, the Academy Awards has plenty of data to be mined. Explore the career of the most-nominated-actor-ever, Meryl Streep, as well as data related to how Oscars impact film profits, and how winners express gratitude in their speeches.

Before the S&P 500 launched in 1957, Standard and Poor's had a daily index with just 90 companies

Unlike previous indexes from S&P, the S&P 500 could be computed in real time using computer technology that tracked stock tickers across stock exchanges. This innovation is partly what led to 500 companies being listed on the index, a huge increase from the 90 companies in S&P's flagship index when the company had to do all the analysis by hand.

An eephus pitch catches batters by surprise

The specialty pitch—rarely used by starters—is unexpectedly slow and thrown with an abnormally high arc, often catching batters off-guard. Below is one famous example from 1981: Yankees pitcher Dave LaRoche striking out the Brewers' Gorman Thomas with an eephus that fans called the "La Lob."

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.

'Jeopardy!' super fans use a specific method to calculate a player's score

In its many decades on the air, “Jeopardy!” has developed a fervent fanbase that likes to play along at home. The Coryat score was developed by Karl Coryat, who appeared on the show in 1996. The equation ignores forced responses on Daily Doubles and Final Jeopardy! Correct responses for Daily Doubles are scored as their natural value.

Visualizing Einstein's special relativity

Before Einstein developed his theory of general relativity, he worked out what is known as special relativity—or why time is experienced different for different observers. The breakthrough rests on his theory that light travels at a constant...

Explaining the 1985 Chicago Bears defense, the greatest ever

Led by coach Mike Ditka, the Bears' 1985 defensive unit led the league in total points allowed, yards allowed, and total takeaways. Throughout the season, the team maintained an average of 12.4 points per game, and during its last three playoff games, it only allowed ten points. Few teams have come close to such a defensive display.

The College Football Playoff included four teams each year from its inception in 2014 to 2023

Replacing the BCS, the four-team College Football Playoff matched semifinal winners for the national title—delivering dramatic upsets, dynastic runs, and some of the sport’s most memorable games over its first decade.

The similarities and differences between bitcoin and ethereum

Ethereum is the second-largest cryptocurrency by market cap behind Bitcoin. Usually, that comparison just scratches the surface of the overall market cap. Instead, a visual pits the tokens up against each other on a per-token basis and shows how and why the Ethereum/bitcoin ratio has fluctuated over time.

The periodic table organizes elements by atomic structure and common properties

Developed by Dmitri Mendeleev in 1869, the arrangement places elements into columns, called groups, if they share the same number of electrons in their outer shell, indicating similar chemical behavior. From left to right across rows, or periods, elements have more protons, as well as corresponding electrons when neutral.

See a data visualization of the East India Company's trade

This tool visualizes the East India Company’s trade from 1760 to 1834, letting you track shipments of tea, textiles, metals, and more. Users can sort by commodity, origin, destination, and date to see London’s vast imperial supply network that shaped the British Empire.

Test your emotional intelligence with this quiz

Emotional intelligence is the instinct and art of understanding feelings: both your own and those of others. Studies demonstrate people with high emotional intelligence often succeed in leadership positions, as they can better serve the real needs...

Visualize the path of every solar eclipse from 1900 to 2099 and see what each looks like when observed from different locations on Earth.

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

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

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.

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.

Browse a detailed visual analysis of over 200,000 similes—comparisons that often use 'like' or 'as'—from popular fiction to see how frequently writers the same idiomatic expressions.

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.

In 1939, baseball star Lou Gehrig delivered his inspirational 'Luckiest Man' speech after retiring due to the health condition that now bears his name.

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.

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.

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.

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.

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.

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.

Explore an interactive map of battles from the American Revolution, along with detailed summaries of each engagement

Crows are believed to have intelligence on par with a seven-year-old child and demonstrate complex behaviors, from problem-solving with tools to recognizing human faces.

Learn more about the history of fireworks, which dates back to an accidental invention during an alchemist's quest for information about immortality.

In preparation for this weekend's Eurovision finale, which is something like the World Cup of pop music, here's a young Céline Dion performing (for Switzerland?) at the 1988 competition.

In 2026, Finland was named the world's happiest country for the ninth consecutive year based on its wealth, social safety network, and high life expectancy, among other factors.

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 19th-century painters of the Hudson River School were among the first American romantics, with portraits that displayed the natural beauty of the young country.

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.

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.

An Ebola vaccine was developed during the 2018 west African Ebola outbreak, but the 2026 Ebola outbreak is with a different species of the virus, not the one that the vaccine is approved to treat.