View a map of America's regional pizza styles

The story of pizza in the United States

Pizza is a big deal in the US, and it has many proud regional iterations. From Chicago deep dish to New York thin crust, this video takes a slice out of US history to focus on this beloved entree. Begin with the documented first incidence of pizza in the US—believed to be by Gennaro Lombardi—and end with how old Pizza Huts are being converted around the country.

A list of the world's best pizzerias

Italy may be pizza's ancestral home, but it's not the only place where you can get a top-notch slice. This guide, compiled by a team of anonymous judges, ranks the 50 best pizzerias in the world, Italy, the US, and more, offering a bucket list for pizza-loving completists.

New Haven 'apizza' nods to Naples and New England

The thin pizza, called "apizza," is crispier than the typical slice from New York or a national chain, and much more like the thin-crust pizzas associated with pizza's birthplace. It's also got some inspired toppings, with one popular pie that speaks to New England's love of seafood: the white clam pie.

One food history professor says pizza is more American than Italian

Alberto Grandi, a professor at the University of Parma, argues that Italians who left the country developed the food now considered "traditional Italian cuisine," thanks to abundant ingredients and opportunities that were not available in the impoverished country they left behind.

Every regional American barbecue style, explored

You've heard of Memphis-style barbecue, and may know the difference between Central and East Texas styles. But what about North Chicago barbecue versus South Chicago barbecue? Or Kentucky's preference for mutton? This lively video takes on every American barbecue style they could find, from Virginia to Hawai'i, in 15 minutes.

An interactive map of race and ethnicity across the US

This map by CNN shows race and ethnicity across the United States. America is more diverse and has more people than ever before. According to the 2020 census, much of its growth is occurring in and around metropolitan areas. By plotting the US...

An interactive map of 250 American places worth visiting before you die

The Smithsonian created ten categories of landmarks—from history and food to oddball Americana and architecture—to enrich your celebration of America's semiquincentennial. You can sort by region or category, see a map of each location, and learn each spot's significance in a clean, aesthetic user interface.

The bizarre 1920 proposal to form a pizza-shaped central European state

In light of the challenges of the Treaty of Versailles, which concluded the Great War, a mostly unknown author, and son of the map's printer, PA Maas suggested central Europe be integrated into a single state. With a central capital in Vienna, 24 Kantons, or regions, would radiate outward in pie-slice shapes.

Detroit-style pizza's recipe nods to the Motor City

Legend has it that the rectangular pies were originally baked in blue steel pans intended to hold nuts and bolts in auto factories. The sauce poured across the top of the pies, meanwhile, is done so in straight lines called "tire tracks."

An AI-built pixel map reimagines New York City as a video game

Isometric NYC is a zoomable pixel-art map that renders the city in game-style perspective (think SimCity), helpfully clarifying the dense geography and architecture. The makers built the project tile-by-tile using satellite data and generative AI. Zoom into building-level views or out to see all five boroughs.

An interactive periodic table maps every possible combination of cheese variables

Plotting milk type, texture, rind, mold, aging, and processing as intersecting axes, the tool shows which combinations already exist as named cheeses, which survive only as rare regional styles, and which remain entirely unexplored.

Mapping the origins of the world's crops

Food has evolved alongside humanity, and through globalized trade, much of the world can enjoy foods once isolated to one region. Examine where your favorite foods originated from and see how diet differs across cultures with these interactive...

Map of union membership by state

In the United States, unions exist across the entire country, but some states have more union members than others. Multiple reasons exist: from policy differences across states, to industrial and cultural influences. Want to learn more? Find out which state has the highest percentage of union membership, and which one has the lowest, through this map.

Mapping NATO's 32 countries across North America and Europe

See an updated map with the option to learn more about each country's membership and role in the alliance. The map shows the borders of its member countries with extra filters capable of locating its many civilian structures, nonmember partners, positions of missile sites, and more.

Mapping the route options between the Pacific and Atlantic

This map shows some of the alternative trade route options that are available to shipping companies, from overland routes that rely on railways to transport goods coast-to-coast, to Arctic Ocean passages.

The illegal happy hour map

Despite its origins as a US phenomenon, happy hours aren't welcome everywhere in the country. This resource includes a map that visualizes every American state's happy hour legislation, from the states with complete bans (like Massachusetts) to states that don't have any happy hour legislation at all.

The best sushi restaurants in the US

Not every sushi spot is the same: They have different fish distributors, different menus, and different vibes. This list ranks US restaurants that have excelled across the board, highlighting well-regarded omakase counters (like New York’s Sushi Nakazawa) and old-school bars (like Los Angeles’ Sushi Gen).

The fall foliage map

Fall's beautiful color changes don't happen all at once, which makes planning that peak fall foliage weekend a bit tricky. Get some confidence with this map which allows you to choose a week from now until November and see which parts of the country...

Explore landforms that exist across America's national parks

Landforms are not just scenic vistas; they are geological storytellers that shape ecosystems, climates, and our understanding of Earth's history. In this comprehensive look at landforms from the National Park Service, you will learn not only about different types of American landforms, but you will understand how these geological features are shaped by various forces, how they reveal an area's geological history, and how they influence climate and ecology.

Visualizing California's wine production

While Europe has France, Italy, and Spain, the US has California. The bulk of US wine production takes place in the Golden State, accounting for roughly two-thirds of the United States’ nearly 800 million gallons produced each year. This chart compares California and United States wine production from 1995 through 2022. Production in both has been trending down for several years, partially due to extreme weather events.

Explore an interactive map built from more than 100,000 survey responses on where people find joy in their lives

See a map of the Maya civilization and its major historical sites

This interactive map showcases the full geographic extent of the Maya civilization, highlighting major archaeological sites across Mexico and Central America. Explore where Maya cities once stood—and where their ruins can still be visited today.

Burrito styles vary across the US and Mexico

Mexican burritos are typically simple, containing 1-3 ingredients. (One exception is Sonora’s burro pecheron, which includes additions like avocado and pepperoni.) American burritos are typically larger and have a wider range of ingredients.

A taxonomy of restaurant types

What's the difference between "fast food" and "fast casual"? Is there any real difference between a "diner" and a "family style restaurant"? This guide from DoorDash explores the industry's fine distinctions, along with some deeper dives into specific enterprises that found success.

View a distribution of wind turbine locations across the US

As of May 2025, the US Wind Turbine Database maps and provides technical specifications for 76,051 onshore and offshore turbines from 1,794 projects, ranging from small installations to large-scale wind farms.

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

How parking infrastructure reveals a region's values

As cars became more popular, the need for city parking increased. In Europe, well-established cities with limited space generally opted for more expensive underground parking beneath public spaces to preserve aesthetics. Available land and decentralized planning in the US saw more parking lots and garages built. These decisions reveal broader policy realities for these regions.

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.

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

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

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.

View the ten deadliest tornadoes in US history.

The United States is one of only around two dozen countries with a fully federal system of government, in which power is divided between national and state governments.

'Shogun,' a 1980s TV series, helped popularize sushi in the US by stimulating an American interest in Japanese culture.

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

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

Explore the archaeological treasures of Pompeii, the city buried under volcanic ash when Mount Vesuvius erupted in 79 CE.

Exploring the Larry Bird punch that almost changed March Madness

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.

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

'Grand Canyon of the Yellowstone,' a work by American painter Thomas Moran, inspired Congress to establish Yellowstone National Park.

Budweiser stores yeast derived from the original 1800s strain in a secret bunker, which only the Head of Yeast Management can access—not even the CEO

See how fireworks are made and learn how metals like magnesium and copper are responsible for different colors.

The American cockroach is actually from Africa, an apparent hitchhiker aboard ships carrying enslaved people, with evidence suggesting the bug may have arrived in the New World as early as the 1600s.

A 2019 Facebook event called on attendees to "Storm Area 51, They Can't Stop All of Us," resulting in countless memes, the creation of a music festival, and eventually the arrests of those who did try to approach the area.

This poison ivy knowledge quiz—accompanied by photos of the plant's varied forms—may help you identify this common rash-inducing growth.

Lesser-known phobias include turophobia, or the fear of cheese, and nomophobia, the fear of being without your cell phone.

Recent research found that the brain doesn't seem to massively rewire following amputation—upending earlier beliefs about the cause of phantom limb pain.

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.

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.