A primer on 5G and how it works

Breaking down how and why 5G will change the world

The jump from 3G to 4G networks was pretty huge, and 4G to 5G is many times greater and is almost difficult to comprehend. This nine-minute video dives into how 5G will transform our world.

How do 5G base stations work?

5G relies on a combination of base stations, including macrocells, small cells, and femtocells. The differences between the three are apparent in size, coverage, and cost—but, small cells in particular are key to providing the high millimeter wave frequencies 5G promises. Learn more in this three-minute video.

The WHO’s guidance on 5G, radiation, and health

5G is the latest wireless mobile phone technology, first widely deployed in 2019. 5G is expected to increase performance and a wide range of new applications, including strengthening e-Health (telemedicine, remote surveillance, and telesurgery).

The coronavirus pandemic sparked theories about the dangers of 5G

COVID-19 spreading around the same time as the rollout of 5G sparked conspiracy theories and outrage that the new wireless technology was harming people and the environment. (Some users may experience a paywall.)

Check your 5G coverage with T-Mobile’s interactive map

Enter your address or zip code in this interactive map from T-Mobile to see where 5G and 4G coverage is available near you.

How do vaccines work? Watch this brief 101

Watch this under-3-minute video explaining how vaccines use the body's immune system to prepare our bodies against viral and bacterial threats to our health.

Five surprising things your GPS can do

You’d be surprised at all the things that GPS—the global positioning system that underlies all of modern navigation—can do. Here's a quick breakdown.

Four video explainers on quantum fundamentals

Ready to level up your working knowledge of quantum mechanics? Check out these four TED-Ed Lessons written by Chad Orzel, associate professor in the Department of Physics and Astronomy at Union College

The stock market, explained in 3 minutes

Curious about the inner workings of the stock market? 1440's got your breakdown of how it works.

Understanding the basics of football

While American football may be entertaining, for fans who never played the game it can be confusing. Why do teams choose to run, pass, line up in certain defenses, run people in motion, call audibles at the line—or do any of the many other things that happen on the field?

A primer on the president's nuclear football

During the Cold War, the United States and the USSR were forced to prepare for a nuclear strike at a moment's notice, leading to a new innovation: the so-called "football" (known as the chemodanchik in Russia), a bag containing nuclear strike plans, authentication codes, and likely a communication device, which attended the country's leader wherever they went. This easy-to-read piece breaks down the history and lore around the high-stakes quirk in nuclear governance.

Wind energy 101

Learn more about the wind industry, from how a wind turbine works, to the new and exciting research in the field of wind energy.

CNET previews CES 2026

This CNET preview outlines what’s coming at CES 2026—from major showcases by Samsung, Sony, LG, and Lenovo to expected trends in AI, chips, digital health, mobility, and robotics.

A framework for understanding the metaverse

An article answering some of the metaverse's most foundational questions: How much of the metaverse is already here? When will the rest arrive? And how will it grow?

Boost your Wi-Fi with aluminum foil

A surprising hack using aluminum foil can potentially improve Wi-Fi signals, to many readers' surprise. Check out the science with this brief article. Wi-Fi signals spread like radio or light waves from a router's antenna, often leading to...

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.

A guide to YouTube TV

In addition to giving users the ability to watch videos for free, supported by ads, YouTube also offers premium subscription products that include an ad-free version of YouTube—as well as YouTube TV, which lets viewers stream live TV channels over the internet. This CNET overview of YouTube TV explains what viewers get with the service, including which channels and networks, as well as a cloud DVR and the ability to cancel anytime.

The deceptively simple proton

Take a visual deep-dive into the proton, a near-fundamental—but deceivingly simple—building block of nature. Among other beguiling characteristics, the particle can't be described by its constituent particles (quarks), but rather exists in a...

A quick guide to everything SpaceX

SpaceX has single-handedly reignited commercial space exploration, with its reusable rockets, broadband satellite constellation, and plans to populate Mars. The company has gone from a mere idea in 2002 to the world's most well-known private space company. Learn the basics about this pivotal company with this quick guide from CNET.

A breakdown of net neutrality, including its benefits and disadvantages

The principle dictates that all internet traffic should be treated equally by internet service providers and that they cannot block, slow, or charge more fees for access to specific webpages. This would help ensure equal access to the internet and prevent larger companies from paying to prioritize access to their content, but it would require greater government intervention.

How companies track you around the internet, explained

Being able to track how users behave on websites is a massive opportunity for companies to hone their products, target their ads, and more. Dozens of trackers are on the average website you visit, depending on how you deal with that site's cookie policy, and Google is the chief tracker of them all. Learn about these companies and what they are tracking with this informative blog visualization.

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).

Watch Steve Jobs unveil the first iPhone in 2007

During his Macworld San Francisco 2007 keynote address, Jobs claimed Apple had reinvented the phone by integrating phone capabilities with internet access and music playback from its iPod product line. The multitouch display eliminated the need for a stylus or keyboard hardware typically found on other smartphones.

The promises and perils of using at-home genetic tests for your health

A primer on genetic testing, personalized medicine, and the promise of pharmacogenomics–the use of genetics to predict an individual's response to a drug.

A primer on reading the rock layers of roadcuts

Road construction often requires cutting through layers of rocks, coincidentally exposing millions of years of rock formation. This simple guide introduces basic rock types, what causes curves and folds, and the major rock formations in regions around the US.

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

Visualize how CRISPR-Cas9—a type of immune system used by single-celled organisms to attack invasive viruses—targets and makes precise changes to a gene's DNA.

Discover the catastrophic consequences of a failure of the US electrical grid—something that is more likely than many Americans think.

Learn how to read a prospectus, the juicy document that any company must file with the SEC before going public.

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

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

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

Read a deep dive on the 'all-purpose healing' peptide BPC-157.

Hear about the 250-year history of the United States Postal Service, complete with some of its strangest deliveries, important innovations, and the figures that made it an American institution.

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.

The history of many kitchen appliances involves unexpected discoveries and applications, including wartime radar turned hamster defroster and replacing an 'ice king' with heat-stealing boxes.

While atoms are normally made of protons, neutrons, and electrons, exotic ones have been built with antimatter—alternate versions of normal matter that live for fractions of a second and are about a billion times as rare.

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.

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.

The most expensive ad of all time was for Chanel No. 5 perfume and cost roughly $33M to produce in 2004—about $57M in today's dollars.

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.

Children are now three times more likely to say they want to be a YouTuber when they grow up than an astronaut, with some even attending 'YouTube camps' that teach kids how to create content for the platform.

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.

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.

Ebola is a filovirus, meaning it resembles a thread under a microscope, though it sometimes twists and can resemble a bowl of spaghetti.

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.

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.

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

Watch a 1934 short film starring jazz legend Cab Calloway, a major figure in the Harlem Renaissance's music scene

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