Don't let failing oxygen sensors compromise your engine's performance. O2 sensors are critical to emissions control on your car, SUV or truck. As the name implies, the O2 sensor (also called an ...

The blood oxygen sensor featured in Apple Watch Series 6 and 7 is “not intended for medical use,” Apple says. That seems odd, considering that low blood oxygen is a serious medical condition. If the ...

Alex Hutchinson is a National Magazine Award-winning journalist and Outside’s Sweat Science columnist, covering the latest research on endurance and outdoor sports. On a typical training ride in Spain ...

Modern cars rely on a dense web of sensors to manage everything from fuel delivery to collision avoidance, and when one fails ...

How many oxygen sensors does a typical car have, and what factors determine this number? Additionally, how do their placements affect engine performance and emissions control? Thomas Hello Thomas, the ...

When it comes to metering in the fire service, there’s a culture of “I’m no hazmat technician. Meters are for hazmat geeks.” However, competency in basic metering is a skill that first responders must ...

Alex Hutchinson is a National Magazine Award-winning journalist and Outside’s Sweat Science columnist, covering the latest research on endurance and outdoor sports. Quick background: muscle oxygen ...