Carbon monoxide detectors can emit various types of beeps. Some are relatively innocuous, while others are high-priority alerts that you should not ignore.

Wearables now flag everything from irregular heartbeats to dips in blood oxygen, but the data is only as useful as a person's ...

Whether you want to track your stress, sleep, heart rate, steps or more, these are our favorite fitness trackers.

Explore my Withings Body Scan review after a month of testing. Discover who actually benefits most—and who should buy a ...