Evaluating the world’s 'smartest' cities

Explore a worldwide ranking of smart cities

This interactive site evaluates residents' perceptions of the infrastructure and technologies available to them across 146 cities to produce a ranking based on a Smart City Index. Users can utilize the City Comparison feature to compare their city with others around the world.

What its like to live in the world’s ‘smartest cities’

What’s it like to live in a smart city? The BBC interviewed residents of five of the world’s smartest, as determined by the International Institute for Management Development, to find out. (See previous resource for those rankings.) Common praises included ease of transportation, sustainability initiatives and proximity to nature.

The world's 10 best places to live

The Economist Intelligence Unit's Global Liveability Index ranked 173 cities based on stability, healthcare, culture and environment, education, and infrastructure. The report shows an overall increase in livability scores compared to previous...

Singapore, one of the world's smartest cities

A fascinating look into what makes Singapore one of the smartest cities in the world, including human-centric innovations benefitting human health such as the AI-powered "Smart Elderly Alert System."

Smart city systems can increase positive feelings toward local government

A 2018 study analyzed 50 global cities to determine whether smart city technologies enhance residents' quality of life. It found that these technologies can decrease the time spent interacting with healthcare and government by 45% to 65%, while also decreasing the disease burden by 8% to 15%.

Dubai and Barcelona are examples of smart cities

By integrating technology into public transit, utilities, and other municipal systems, these cities aim to reduce costs and enhance the quality of life for their residents. Some of these technologies include adaptive lighting, parking sensors, and underground waste systems.

What is a smart city?

The internet of things and automation are two of the technologies used in smart cities. Learn about the technologies making cities more human-centric in this three-minute read.

Read a book making the case for 'smart enough' cities

University of Michigan professor Ben Green argues that cities should be enhanced by technology rather than driven by it, thereby preventing injustice and inequality beneath their surface. By embracing social change in conjunction with smart technologies, residents, Green suggests, can avoid valuing such technologies as ends in themselves.

Smart cities have been more successful when upgrading existing infrastructure

Building urban landscapes with smart technologies from scratch has sometimes produced futuristic-looking yet sterile environments that struggle to attract residents and justify high costs. Enhancing existing areas while retaining their historical and cultural touchstones has proven more appealing in many cities.

Artificial intelligence may further enhance smart city data analysis

Identifying patterns within systems in the Internet of Things may enable AI tools to make informed decisions regarding transportation, safety, and sustainability without human intervention. However, such tools will also need to successfully address concerns about privacy, digital equity, and algorithmic bias.

Ranking America's healthiest and unhealthiest cities

Compiling data from the 180 most populated cities in the US, WalletHub evaluated which of those metros are the healthiest using 43 health indicators, from the average cost of a medical visit to total vaccination rates.

Explore plans for smart cities expected to be built by 2050

Locations such as Net City in China, Woven City in Japan, and NEOM in Saudi Arabia are expected to incorporate green energy, AI, and advanced transportation system technologies to enhance air quality, reduce congestion, and minimize pollution by significantly reducing personal car use.

Are smart cities a dumb idea?

Smart cities require vast troves of data to run, making their systems attractive to hackers. Listen to this one hour podcast to learn about the risks and what is being done to mitigate them.

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.

The world’s top 20 cities for startups include San Francisco

In 2023, Singapore had the highest venture capital funding per capita in the world. But that doesn’t necessarily mean it’s the best place to have a startup. In 2023, PitchBook analyzed data to determine the world’s best startup city, including fundraising activity, venture capital deals, and exit value. San Francisco ranked as No. 1. See which other locales landed in the top 20 with this graphic.

See a ranking of the world's most valuable brands

Evaluating a brand's value involves evaluating investments in marketing, the strength of the brand, and even the company's performance. Technology companies represent most of the global economy's brand value. As of 2026, Apple has the most valuable brand in the world at $608B.

EXTREMA is a smart city system protecting residents from heat-related health risks

The mobile application is designed to protect citizens in select European cities from extreme temperatures by calculating the heat index at a specific location and providing personalized information to users. Municipal governments can also utilize it to inform emergency responses, such as determining when and where to open cooling centers.

An architect ranks the best bridges in the world

Architext Ezra Groskin builds bridges and argues that the best bridges do more than allow traffic. They should, he believes, encourage human interaction and lingering to ultimately become a destination of their own. Explore ten stunning designs that connect communities, from New York to Switzerland.

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.

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

Affluence largely influences where Michelin stars are awarded

Countries with high GDP are the most highly decorated with Michelin stars. As this 2024 in-depth statistical analysis notes, though, that appears to be changing, with the Guide beginning to recognize other areas of the globe.

The Kardashev scale measures a civilization's advancement based on energy use

Developed by Russian astrophysicist Nikolai Kardashev in 1964, the scale classifies a civilization based on the amount of energy its existing technologies can harness, ranging from a society that consumes as much energy as a single planet to one that consumes as much energy as an entire galaxy.

Critics choose the 2025 ‘Worst in Show’ awards for CES products

Under the motto “Not all innovation is good innovation,” The Repair Association has selected products at CES that are the least private, sustainable, or repairable for consumers—as well as the “Who asked for this?” award. For example, the least repairable award went to the $2,200 Ultrahuman Rare Luxury Smart ring, which can only be charged 500 times—and replacing the battery effectively destroys it.

Why Google Search's ranking system combines filters, signals, and machine learning layers

Rather than static rankings, dynamic tools continually shift search results in real time. These include Twiddlers, which adjust ranking positions based on document traits and search context, and FreshnessNode, which reshuffles top results to prioritize timely informational content.

'Planet Money' debates the financial indicators that defined 2025

In this end-of-year episode, "Planet Money" stages a playful debate over which economic indicators best captured the chaos of 2025—from tariffs to AI bubbles—and which signals may matter most as the US economy heads into 2026.

Governments around the world are struggling to measure loneliness

Funding for policy resources often hinges on measuring the scale of a problem and then being able to measure the effectiveness of interventions, requiring data. Yet defining and measuring loneliness at a country-scale remains challenging. Typically, the University of California Los Angeles Loneliness Scale is sometimes used worldwide or adapted to measure loneliness.

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.

One writer suggests using the California roll to evaluate sushi restaurants

Christine Carone uses the logic of the Big Mac Index—a metric for evaluating purchasing power by comparing countries’ Big Mac prices proposed by the Economist—for evaluating takeout sushi. Her recommendation is looking at the cost of a California roll, a relatively inexpensive, middle-of-the-road item for any American sushi spot. If it’s too expensive, the restaurant isn’t offering good value. But if it’s too cheap, you should worry about the quality of the fish.

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

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.

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.

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.

See the 25 of the best photos of auroras from around the world.

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.

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%.

Calculate how much of your tax dollars go to each federal program based on your income, filing status, and number of children

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

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

Louisiana's 'Cancer Alley' is infamous for having some of the highest industrial pollution, toxic air emissions, and cancer risks in the US.

After NASA's Voyager 1 captured Earth as a single pixel as it left the solar system in 1990, astronomer Carl Sagan used the image to reflect on humanity's fragility and the responsibility to protect 'the only world we've ever known.'

View the ten deadliest tornadoes in US history.

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

In 2025, four executives from large tech companies were given positions in the US Army Reserves—including Palantir Chief Technology Officer Shyam Sankar, which reinforced Palantir's ties with the US military and its role as a leading defense partner.

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

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.

In 2019, a laptop loaded with six of the worst malware in history and described as 'an exhibit of historical weaponry' sold for $1.3M.

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.

Some researchers have labeled nomophobia, the fear of being without your phone, as 'the phobia of the 21st century.'

Play the role of a student in a game where you try to navigate college and remain debt-free, selecting different income levels, high school experience, race, ethnicity, and more.

Hotels in Cannes, the glamorous city on the French Riviera, hire hawks to ward off seagulls during the city's famous film festival.