What is a smart city?

Connected technology improves infrastructure efficiency in smart cities

Through information and communication technologies, smart cities can provide enhanced public services and improved quality of life by managing traffic and dynamic safety policies. They can also promote sustainability by automating energy use and redirecting resources according to need.

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.

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.

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%.

Many issues facing urban environments cannot be solved by smart technologies

Although connecting systems to the Internet of Things can provide improved efficiency in municipal systems, problems such as limited affordable housing are driven by larger socioeconomic factors. Some experts suggest that local governments should focus resources on practical solutions to these issues rather than investing in smart technologies.

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.

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.

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.

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."

The Internet of Things refers to the connection of all devices to the cloud

These connections between everyday objects, each other, and data processing centers enable devices to adapt to user needs and improve their ability to respond to real-time data. IoT networks are designed to enhance the efficiency of homes, cities, and industries.

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.

Digital twins create real-time 3D models of smart cities

These re-creations allow city planners to track changes and manage infrastructure more easily by testing strategies in virtual environments. Geospatial technologies, such as mobile mapping and satellite imaging, help cities assess urban layouts, plan for disasters, and manage resources more efficiently.

What are smart contracts?

Smart contracts are potentially one of the most useful tools associated with blockchain, and they can enable the transfer of everything from Bitcoin and fiat currency to goods transported around the world. Here’s what they do and why they’re likely to gain traction.

A brief history of artificial intelligence

The concept of artificial intelligence and what it may mean for humanity has evolved as computer technologies have grown increasingly powerful through the decades. Beginning with the first (massive) computers in the 1940s, scientists have sought to make the machines as intelligent as humans. But it wasn't until computing power made exponential gains have computers begun to imitate human behavior.

Defining 2025's internet slang

The internet is a slang factory, and new terms regularly crop up. This list breaks down some of the newest terms to hit social media, including "aura farming" (the cultivation of charisma to attract others) and "clock it" (an encouragement to remember something important).

Biohacking: The effort to optimize health and extend life through technology

Biohacking seeks to optimize human health and performance through everything from simple lifestyle adjustments to more radical interventions like body modifications and experimental technology. At its core, biohacking covers a wide spectrum—ranging from improving sleep and focus to implanting devices that integrate technology with the human body.

30 everyday inventions originally created for space

In their pioneering work to develop the technologies necessary for humans to inhabit space, NASA and its counterpart agencies around the world have produced dozens of products millions of people use everyday. Some of these are obvious, like water filtration systems and wireless headsets, while many are surprising, like artificial limbs and insulin pumps. Dive into the list here.

When you complete a CAPTCHA on a website to prove you are human, you may be unknowingly training algorithms for self-driving cars, whose systems require training data to help identify crosswalks, bicycles, and other outdoor objects.

Distinguishing between Web 1.0, 2.0, and 3, all made possible by the internet

The World Wide Web began as read-only, static webpages on Web 1.0, where data could not be entered. With Web 2.0, the online interface became a read-write space for data entry, post creation, and forum participation, among other activities. Web3 is intended to be decentralized, user-owned, and built on blockchain technology.

What is mixed reality?

Mixed reality is a technology that blends the physical and digital worlds, allowing virtual and real objects to coexist and interact in real-time. It combines elements of both virtual reality and augmented reality, enabling users to perceive and manipulate digital content as if it were part of their physical environment.

A simple explanation of semiconductors

Semiconductor chips are electronic devices that store and process information. Today they can contain billions of microscopic switches on a chip smaller than a fingernail. The article provides a quick overview of how the devices work and how they've provided the backbone of the computer age.

Visit the official CES site for event info, tech trends, and innovation awards

The CES Las Vegas site features everything from event schedules and exhibitor lists to coverage of emerging tech trends and highlights from CES Innovation Award winners across various categories, including AI, health, and sustainability.

What is a microbiome (and why are they important)?

Jump to: What is the microbiome? How microbiota benefit the body The role of probiotics Can diet affect one’s microbiota? Future areas of research What is the microbiome? Picture a bustling city on…

Virtually all public libraries in the US offer free internet access

Beyond providing internet access, libraries have also expanded into broad digital hubs for communities. Ninety percent offer basic digital literacy training, 76% help patrons navigate online government services, and 73% assist people with job applications.

The Society of Automotive Engineers sorts self-driving technology into six levels

At level 0, a vehicle cannot intervene on its own, and the driver controls all navigation. At level 3, the car operates autonomously under limited conditions, but a human can still take control. A future level 5 vehicle drives itself and lacks a steering wheel or pedals.

Tattoos, explained

Tattoos last because immune cells trap ink beneath the skin—but there's more to the story. This overview looks at how ancient cultures used tattoos for status, spirituality and punishment; how technology like the electric tattoo machine transformed the art form, and where innovations like smart tattoos could take it next.

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

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.

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.

The first robot in literature may have been a 'mechanical man' in 1907's 'Ozma of Oz,' a book in L Frank Baum's 'Wizard of Oz' series.

The name 'Silicon Valley' arose from the founding of Shockley Semiconductor Laboratory in Fairchild Semiconductor in 1956-57, founded near Stanford University in Palo Alto

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.'

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.

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

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.

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

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.

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

How Amazon operates a 'flywheel' business model, a self-reinforcing cycle that drives continuous growth

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

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 use of fungi to detoxify land and water—a process known as mycoremediation—has been used to clean up natural resources affected by the 2025 California wildfires.

Studies suggest when you sleep is as important as how much you get, and syncing with your circadian rhythms may lead to less fatigue and improved long-term health outcomes

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.

Learn how monoclonal antibodies, which mimic the body's antibodies, can fight diseases like Ebola.

An initial public offering or 'IPO' is the process of a private company becoming public by putting shares of the company on the stock market for purchase.

About 2,000 US babies are born annually without some portion of their limbs, potentially leading to a lifetime of pricey prosthetics.

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.

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.

Take a 3D tour of the Hajj, Islam's annual pilgrimage to Mecca, undertaken by over 1.5 million Muslims.