The watch is slimmer and lighter than before, but packs additional sensors and has a new strap design with "bamboo joints".

A car that hesitates when the accelerator is pressed is usually experiencing a fuel delivery problem, an ignition issue, or a sensor fault disrupting the engine management system’s air-fuel ...

A check engine light that returns after being reset means the underlying fault has not been repaired, only cleared from the vehicle’s diagnostic memory. The OBD-II system monitors engine and emissions ...

I own a smartwatch, and although it comes with all the usual health and activity tracking features, I wear it only when I am ...

Researchers have created “Smart Underwear,” a wearable device that measures flatulence by detecting hydrogen produced by gut microbes. Early tests suggest people may pass gas about 32 times a day—much ...

Our editors tested two popular glucose monitors to determine which is the best for improving ​​diet, sleep and exercise habits.

Plus, doctors’ number-one pick and their take on the devices.