If you want to know more than one thing, you need more than one sensor. In fact, many engines today have not just two oxygen ...

A glowing red light isn't always a good sign, but in the case of your Apple Watch, it's just a case of a sensor that's ...

The check engine light is the worst kind of message. It tells you something is wrong without telling you what, and the dealership will happily charge a ...

As altitude increases and oxygen levels drop, climbers on Kilimanjaro face physiological risks that can turn a straightforward hike into a dangerous situation.

The Smart Sock 2 is great for parents who want to monitor their child's heart rate and blood oxygen level, but it looks like ...

The Whoop band won't tell you the time, but it might change the way you work out. Here's who should wear which.

Many people assume sleep apnea is stable, but the reality is very different, and some nights can be much worse than others, ...

As a certified personal trainer, I tested 16 wearables while training, running and swimming. Here are the best fitness ...

Soon, thanks to the advance of robots, the only reason left to send humans to the moon will be as an ultra-expensive sport, say astronomer royal Martin Rees and astrophysicist Donald Goldsmith ...

In the United States, every automatic garage door must have a reversal system that stops the door if something is in its path ...

From roof racks to tires, maintenance and driving habits, you can likely save hundreds of dollars per year at the pump.