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Your watch’s VO2 max isn’t perfect, but you can improve its accuracy with better data and heart-rate tracking.

A major flare-up affected an aircraft’s data and control; the solution was so easy that it almost makes no sense.

Scientists descend nearly 11,000 meters into the Pacific to investigate reports of oxygen production without sunlight on the ...

On the flip side, a low HRV — less variation between beats — can indicate your body is stuck in “fight-or-flight” mode. That ...

NASA says a critical prelaunch test known as the wet dress rehearsal — originally scheduled for Feb. 2 — could now take place ...

Carbon monoxide (CO) is one of the most serious safety hazards in a home, and one of the easiest to miss. The gas has no ...

A vehicle’s Check Engine light can turn any car ride into a harrowing experience. As soon as the check engine light ...

Japan resumes supplying the International Space Station (ISS) after five years, now with a new cargo ship launched on its H3 ...

One of the most important measurements we make while tuning an engine is finding out what the actual balance of air and fuel was inside the engine. It doesn’t matter if we have a carburetor, port ...

If you build engines, tune cars, or even just like mashing your foot on the throttle with conviction, you’ve probably heard the term “wideband O2 sensor” being thrown around at the track, dyno ...