We tested popular wideband O₂ controllers against lab-grade equipment to see how accurate their lambda readings really are under real engine conditions.

The NIMA Gluten Sensor is 99% accurate at detecting gluten in your food. All it takes is three minutes. At CES 2026, one of ...

Smart plugs can add controls to any outlet, but they aren’t perfect for everything. Here’s our guide to using one and which ...

Following a successful Kickstarter last year, a combination tuner, string winder and metronome is now available to buy. There ...

Purdue University researchers have developed a device for more conveniently detecting pathogens in health care settings, on ...

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.

Oura Ring 4 review: This smart ring is a great sleep tracker, but not a great activity tracker ...