Red and blue election maps are a modern media invention

Researchers found that 2020 redistricting tactics created safer districts and reduced competition

Studies of the 2020 redistricting cycle show that map-drawing strategies locked in predictable outcomes. The result was fewer competitive races, more incumbents shielded from challengers, and representatives less responsive to broader voter preferences.

Red and green became Christmas colors thanks to holly—and Coca-Cola

Holly's green leaves and bright red berries linked the colors to winter festivals for centuries, but Coca-Cola's 1931 Santa—painted by Haddon Sundblom in Coke-red robes—helped cement red and green as the modern Christmas palette.

A viral photo of a dress sparked a fierce online debate over its colors

A post showing a dress sparked a heated social media divide, with some insisting it was white and gold and others insisting it was blue and black. The debate quickly spread to celebrities and brought in scientists to explain the optical illusion.

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...

Modern media exposure may impact whether people dream in color or black and white

A 1942 study found that 70.7% of college sophomores rarely saw colors in their dreams, while a similar survey in 2003 showed that only 20% reported the same. The prevalence of color television and films may make color dreams or the recollection of color features easier to remember.

How Americans have voted throughout history

From shouting candidates’ names, to hanging chads to electronic scanning, the nature of voting has a long, sometimes bumpy history in the United States. See descriptions and images in chronological order with this digestible timeline.

How house colors can indicate gentrification

Reporters from the Washington Post share an analysis that indicates gray and neutrally toned houses are signs of gentrification in a neighborhood. Visuals of different paint swatches help illustrate which colors are chosen for newly built homes in certain DC districts.

Relative motion between a source and an observer shifts the color of observed light

The phenomenon, known as the Doppler effect, is the result of experiencing an increase in the frequency of observed waves when approaching a source and a decrease when moving away. Because this property corresponds to color, approaching objects appear bluer than normal—blueshift—and receding objects appear redder than usual—redshift.

A collection of contemporary maps from World War II

Newspapers published detailed maps of the conflict in real-time. See different portrayals of the situation, ranging from propaganda maps to speculative maps about the war's outcome. The fascinating depictions reveal how maps can show us the aspirations and intentions of different players in a global conflict.

Colorizers convert Hubble's gray scale images into color composites of different wavelengths

The near-infrared and ultraviolet light captured by the space telescope is not visible to human eyes, but observational data of these types of light can be filtered and modified into visible colors. Many detailed images of astronomical objects are the result of combining these artificially colored images into layers.

Spectacular shots of 2022's Blood Moon eclipse

A total lunar eclipse took place early Tuesday on Election Day. This occurs when the moon and the sun are on exact opposite sides of Earth, NASA says. See photos of the event here.

Roughly half of the world's nations are (relatively young) electoral democracies

Classifying countries by governance type involves leaning into technical systems like the Regimes of the World classification. In this data dive, see a map of the world's oldest and youngest electoral democracies, as well as liberal democracies (which are measured by the protection of minorities and checks on executive power from the legislature).

The term 'gerrymander' dates back to a 1812 Boston dinner party

The term "gerrymandering" arose when Massachusetts Governor Elbridge Gerry approved a state senate map with a district so contorted it resembled a salamander. Critics dubbed it the "Gerry-mander," cementing the term for partisan map manipulation.

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 excellent look at how Democrats lose working class voters.

Democrats fear they are losing white swing voters over racial politics. Three studies suggest that the party’s elite culture may be the real problem.

See the evolution of Super Bowl logos and how the NFL refined its visual identity over time

Tracing Super Bowl logos from early, varied designs to today’s standardized look shows how the NFL adapted to shifting design trends, television demands, and brand strategy.

Many scholars consider the first commercial radio broadcast to be during the 1920 presidential election

On Nov. 2, Pittsburgh, Pennsylvania, station KDKA broadcast the results of the presidential election. Leo Rosenberg delivered the news that Warren Harding had won in a landslide to an audience of around 100 people.

Political sloganeering is often downstream of memes

In 2018, #JobsNotMobs morphed from an internet meme into a conservative slogan. A video clip of angry protesters mixed with news anchors discouraging the use of the word "mob" posted on October 11, birthed the phrase. By October 19, it was adapted into a Republican party slogan.

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...

Models of the strong nuclear force resemble the RGB color system

Quarks are described as having “color charge” and must combine to produce color-neutral particles (e.g., red + anti-red = white). An isolated quark, which would create a colored particle, is impossible because the energy to overcome strong force particles—gluons—is enough to generate more quarks to maintain color neutrality.

Modern prediction markets started in Iowa in 1988

The University of Iowa's Iowa Electronic Markets were introduced during the 1988 US presidential election. The beginning of their origin story almost sounds like a joke: Three economists walked into a bar.

Congress created a special electoral commission to resolve the 1876 election

After multiple states sent competing electoral slates in 1876, Congress formed the Electoral Commission of 1877 to arbitrate the dispute, which ultimately awarded the presidency to Rutherford B. Hayes and prompted later reforms to the electoral count process.

Imagining the reunification of the Koreas

The idea of reunifying North and South Korea has been a geopolitical dream for years, though one that feels perpetually out of reach. That hasn’t kept some from imagining it, though. Reddit user Aofen created a set of maps that postulate what effect a hypothetical reunification would have on population numbers, birth rates, median income, political affiliation, and more.

Eurovision voting largely follows cultural blocs

In 2025, France's AFP analyzed the voting data from every Eurovision Song Contest and found that how countries vote often reflects long-standing cultural associations, with Nordic countries, Baltic states, and former Soviet nations tending to vote in solidarity.

The Civil War turned the Continental Divide into an American symbol of identity

Historians argue that the boundary only became a celebrated American symbol in the 1860s, when Civil War-era leaders promoted a west-east geographic divide to replace the devastating north-south political divide, and that the term's use spiked after the transcontinental railroad crossed it in 1868.

Colored paint lines on new tires mark different types in the factory

Each stripe helps warehouse workers and distributors identify tire types at a quick glance. This innovation became important a century ago as manufacturers scaled operations and developed distinct product lines.

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

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.

Power lines are dotted with large, brightly colored balls to improve the visibility of these thin wires to helicopters and small planes and help prevent potential crashes.

The Great Salt Lake's distinct dual coloration results from high-salinity organisms that only live in the northern portion and produce a purple protein.

Mid-century modern graphic designers, known for their bright colors and bold lines in advertising, also found success with children's books.

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

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

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

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.

All rainbows are 'raincircles' caused by water droplets separating white sunlight into a spectrum of colors, but Earth's surface blocks the bottom half of the circle from our line of sight.

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.

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.

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

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

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.

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

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.

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

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

How the most famous Ebola book, The Hot Zone, which sold 3.5 million copies and was translated into 30 languages, got aspects of the disease so wrong.

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

In 2009, the nation was gripped by the story of a missing young boy who was believed to be floating over Colorado in a homemade balloon, until it was revealed that he was at home the whole time.

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

Abraham Lincoln was almost assassinated weeks before his inauguration as he traveled from Illinois to DC through Baltimore in 1861; it took two independent claims for Lincoln to be convinced the threat was real