Learn how to safely check an e-bike charger's DC output with a digital multimeter, interpret the reading, avoid common testing mistakes, and decide what to check next. The post How to Test an E-Bike ...

A wristband that listens to the carbon dioxide wafting out of your skin sounds like science fiction, but a team of biomedical engineers in China has now built and tested exactly that — and solved t ...

The O2’s biggest residency of 2026 is coming to a close. Ariana Grande’s Eternal Sunshine Tour will have been at London’s biggest indoor music venue for a huge 10 nights, and the shows so far have ...

A muscle oxygen sensor straps over a working muscle and uses near-infrared light to estimate the oxygen saturation of the tissue beneath it, known as SmO2. The reading reflects the balance between ...

These WIRED-tested indoor and outdoor air quality monitors give you insights into your home’s air quality, warn of potentially harmful pollutant levels, and help keep tabs on your environment. Our top ...

Coros Pace 4 Pro puts a 3,500-nit AMOLED, titanium, sapphire, maps and a 60-hour battery into a 43g Pace for £389 / $449.