There are a lot of aviation apps out there that allow you to access useful aviation and weather data from your wrist. Here we ...

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

Piezofluorochromism, the phenomenon of materials reversibly changing their fluorescent color when pressure is applied, is ...

Fingertip monitors known as pulse oximeters that can be used at home to detect low blood oxygen levels (hypoxemia) give ...

Semen is typically whitish-gray with a jelly-like texture, but it can fluctuate due to different factors. For example, certain infections may make your semen look more yellow or green. Your semen is ...

New ultrasound-based wearable measures blood pressure from deep vessels without a cuff, improving accuracy and comfort.

A pulse oximeter measures blood oxygen levels at home and in healthcare settings. Abnormally low readings on a pulse oximeter might require medical care, especially if they are below 92%. Skin color ...

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