The fascinating urban planning experiment that birthed Brazil's capital city

IBM helped turn Rio de Janeiro into a smart city before it hosted the World Cup

In response to the deadly floods and mudslides in 2010, Brazil and IBM developed a multimillion-dollar plan to modernize Rio's emergency management infrastructure. An operations center utilizes advanced weather forecasting, surveillance, and real-time data to surveil and respond to events such as severe storms more accurately.

Brazil's Carnaval takes place in a designated stadium

Like Mardi Gras, the official Carnaval celebration in Rio de Janeiro occurs annually before the Lenten season. One of the key differences is that Brazil's version includes a ticketed component held at the Sambadrome Marquês de Sapucaí, a long, open-air stadium where audiences can watch the floats pass.

Young Brazilians protested their country's hosting of the 2014 World Cup

In 2013, the Confederations Cup in Brazil was marked with widespread protests in a period dubbed "Generation June." Many were angry about the looming 2014 World Cup, which they believed was an affront to the country's many pressing issues.

Brazil's military dictatorship led to bossa nova's decline

In 1964, Brazil's president João Goulart was overthrown by a military coup supported by the US State Department. Scholars argue that the events led to the decline of bossa nova, with many Brazilians believing its pleasant sounds and picturesque lyrics were tone-deaf to the politically fraught moment.

South Korea's decades long effort to build a new capital

South Korea has spent decades trying to ease overcrowding in Seoul by developing Sejong City as a new administrative hub. Named after the king who created Hangul, Sejong was designed to decentralize government functions—but slow population growth and limited transit have complicated the plan.

The unbuilt monuments of Washington, DC

The capital city of the United States famously was built in a swampy area, with dozens of memorials, monuments, and more spanning its vast and complex design. This video explores five monuments that were either built or were rejected as alternatives in the sprawling District of Columbia on the banks of the Potomac River.

Impact of Brazil's politics on the Amazon rainforest

In this seven-minute podcast, Andrew Limbong speaks with environmental researcher Erika Berenguer about Brazilian President Luiz Inácio Lula da Silva’s ambitions to save the Amazon Rainforest from deforestation.

Henry Ford once ran a failed rubber plantation in Brazil's Amazon Rainforest

In 1927, Henry Ford bought 2.5 million acres of land off the Amazon River in Brazil, with the intention of creating an American-style Ford factory to produce the rubber needed for tires. The development, known as Fordlandia, was never able to produce enough rubber, and Fordlandia was officially shut down in 1945.

Take a virtual tour through the Amazon Basin

Thanks to Google Maps’ Street View feature, people can virtually explore the Amazon River basin and its surroundings—part of the Amazon rainforest that is under the protection of the Brazilian government with restricted access to the public. The...

In 2024, Black Friday was observed in 129 countries

Brazilians adopted Black Friday in 2010. Today, 60% of Brazilians participate in the shopping event. Large corporations offering Black Friday sales in the US (like Amazon, for instance) began offering similar deals in places like the UK, spreading the holiday internationally.

Brazil is leading a cheese revolution and challenging European dominance in the industry

Brazil has plenty of traditional dishes that rely on cheese, but it’s only in the last decade that the country has emerged as a powerhouse in artisanal cheesemaking. While the cheeses may be inspired by European traditions, options like cocoa-dusted goat cheese or an Amazonian buffalo cheese are pure South American.

Urban planning in ancient Rome

Ancient Rome represents one of the earliest examples of coordinated urban planning from a central government for which researchers have access to contemporary records. This review from MIT showcases ancient Roman cities built on various types of grids, from rectangular outlines to those shaped around two intersecting axes, with several examples and maps provided for each.

The crypto city home to biohacking experiments

The DIY nature of biohacking gives the work an entrepreneurial feel, as seen by the emergence of community labs, at-home testing kits, and corporation-backed cities that don't necessarily require government-approved testing standards. Próspera, Honduras, created by a business of the same (first) name, was born from legislation that allowed international businesses to shave off a slice of the country to establish their own micronations.

Exploring the White City of Tel Aviv, the capital of the Bauhaus style

In 1933, around 60,000 German Jews fled the Nazi regime for what was then Mandatory Palestine. Among them were six Bauhaus students, who accommodated the influx by working with nearly 150 other architects to design over 4,000 buildings that reflected their alma mater's modernist style. This Smarthistory article on the area, now a UNESCO World Heritage site, allows you to see several of its buildings from the comfort of your couch.

The 15-minute city lets residents meet their daily needs within 15 minutes on foot

Many cities have been designed with inefficient layouts that waste time and lower the quality of life of those who live there. In the 15-minute city, essential services—including work, food, education, and health—should all be located within a short walk or bike ride from where people live.

The evolution of Mexico City, from the Aztecs to today

The sprawling modern city situated in the Valley of Mexico began a millennium ago as an island in the middle of Lake Texcoco, connected to land through a series of causeways. Learn how the Aztecs built Tenochtitlan, how the Spaniards conquered it, why the lake disappeared, and more with this visually rich history and geography of a city of 9 million people.

See a 3D reconstruction of Tenochtitlan, the Aztec capital that was home to an estimated population of 200,000 to 400,000.

Why Amsterdam looks so unique

The Netherlands' capital consists of concentric canals lined with towering, unusually thin row homes, an altogether unique profile in Europe and the world. When it was growing, the city was a key trade hub, and merchants wanted direct access to waterways. Canals were built like roads, and houses were required to be very thin to allow for more homes to line the canals.

Jakarta surpassed Tokyo as the world's largest city in 2025

Asia is the epicenter of global urban population, hosting most of the world's ten largest cities by population. The top three are Jakarta, Indonesia, Dhaka, Bangladesh, and Tokyo, Japan.

Portland, Oregon, ran under a commission government for more than 100 years

From 1913 to 2024, Portland operated under a commission form of government, in which five elected commissioners each directly managed their own city bureaus—a structure that was largely abandoned elsewhere in the US by the mid-20th century.

The White House was almost entirely rebuilt from 1948 to 1952

Structural failure forced President Harry Truman to vacate the White House in 1948. Engineers gutted the building, keeping only its exterior walls, and rebuilt the interior with a new steel frame, modern utilities, and reinforced foundations by 1952.

Quincy Jones' 'Big Band Bossa Nova' helped introduce bossa nova—a jazz-influenced Brazilian genre—to the US

Why Kansas is giving away cheap land

In Lincoln, Kansas, a housing renaissance is underway, driven by affordable real estate prices and a lower cost of living, in stark contrast to high-priced urban centers. Bradley Roberts, who previously lived in San Francisco, moved to Lincoln and...

The federal budget process begins nearly a year before funds are spent

Creating the federal budget starts months in advance. This resource explains each stage, showing how the president proposes priorities, Congress reshapes and approves funding, and federal agencies implement the final budget.

What happened during the Fall of Saigon?

After the U.S. pulled out of the conflict in 1975, North Vietnam quickly subsumed the South, renaming its then-capital of Saigon into Ho Chi Minh City. What happened during the city's fall? Take the next 17 minutes to watch this 1975 footage from the Associated Press to learn more.

The US first hosted the World Cup in 1994, a tournament that lives in soccer infamy for its poor planning and the murder of Colombian player Andres Escobar, who'd accidentally scored on his own net.

Burning Man Explained

Every year, tens of thousands of people journey into the Nevada desert to build a temporary city centered on radical creativity, art, and community at Burning Man.

Revisiting the short-lived 1960s space race theme park in Alabama

In 1964, a Huntsville, Alabama, entrepreneur announced a $5M space-themed park amid the burgeoning space race—just as Walt Disney was quietly planning a similar futuristic park outside Orlando. Space City USA collapsed by 1966, leaving only concrete ruins in a housing development.

Legendary architect Frank Lloyd Wright designed the SC Johnson headquarters in Wisconsin, aiming to make a cathedral-like workplace

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

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

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

Massive 3D printers have been used to build homes by stacking layers of 'concrete toothpaste,' a fire-resistant material that effectively insulates against outside noise.

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

The American Society of Civil Engineers' infrastructure report card gave the US a C in 2025, its highest grade since the project launched in 1998.

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

Explore the history, structure, and species of Australia's Great Barrier Reef with this interactive journey narrated by Sir David Attenborough.

Researchers believe the brain consolidates memories, processes emotions, and plans for the future during dream states

The syncytiotrophoblast is the outer layer of the placenta and the largest human cell, spanning an area about twice that of a king-sized bedsheet.

Electrical grids worldwide must double their power delivery capacity by 2050 to meet surging demand from AI and electric vehicles.

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.

Against his wishes, Albert Einstein's brain was removed before his cremation, and the pathologist responsible stored it for decades in mason jars within a beer cooler.

The 2026 Ebola outbreak in the DRC is spurring new Ebola vaccine development for the Bundibugyo species.

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.

The first image of a black hole was captured by creating an Earth-sized virtual observatory from a network of eight radio telescopes.

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.

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.

American dance legend Martha Graham, sometimes called 'the Picasso of dance,' refused to perform at the 1936 Olympics in Berlin and conceived the piece 'Chronicle' in response to the experience.

Hurricanes, which rely on air consistently spinning in the same direction, cannot cross the equator because air curves in opposite directions north and south of it.