PCWorld explains how to create an affordable CO2 air quality monitor using a Raspberry Pi and MH-Z19C sensor for under $40. This DIY project helps monitor indoor air quality since high CO2 levels ...

Experts say gait speed, grip strength, balance, and endurance are some of the strongest predictors of long-term independence. Here’s how to check them yourself—and what the results mean. Balancing on ...

If the wind, rain and snow are somewhat getting you down, it’s possible that the phone in your pocket could help you relieve some of the January blues. If you are an O2 customer, you have automatic ...

Buying a new mobile phone is expensive enough in 2026 given the increasing costs of smartphones, but another cost to worry about is the mobile plan you pay for alongside the device itself. Whether you ...

How do you test the latest Minecraft features? These snapshots are the very first iteration of Minecraft updates and are a way for Mojang to test out bug fixes, technical changes, and even new blocks, ...

You have a great idea—a product tweak that will save your company money, a process change to increase your team’s productivity, or a plan for heading off a looming crisis. There’s just one snag: ...

A metabolism test provides a snapshot of certain hormone levels to understand how your body converts calories into the energy that fuels every physical, biological, and mental activity. These tests ...

We test dozens of laptops every year here at ZDNET: from the latest MacBooks to the best Windows PCs, aiming for a dual approach. On one hand, we run a series of benchmarking programs to gather ...

We independently review everything we recommend. When you buy through our links, we may earn a commission. Learn more› By Colleen Hagerty Colleen Hagerty is a writer focused on emergency preparedness.

If it feels like everyone is getting the flu, you're not imagining it. This is shaping up to be another severe flu season. That's why it's important to take advantage of every tool we have to keep the ...

Choose a provider and transfer method, research the costs and collect the necessary information. Don't forget to save the receipt. Many, or all, of the products featured on this page are from our ...

Corin Cesaric is a Flex Editor at CNET. She received her bachelor's degree in journalism from the University of Missouri-Columbia. Before joining CNET, she covered crime at People Magazine and ...