We tested 50 air purifiers to find the best for removing dust, pollen, pet dander, smoke, and odors, with picks for bedrooms, ...

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 ...

Consumer Reports receives a wide range of questions from enthusiasts and the auto industry looking for a deeper understanding of the methodology used in the reliability section of our latest Annual ...

This is a comprehensive Arduino library to obtain ozone (O3) concentration in the air with the Winsen MQ131 sensor. The library supports both versions of the sensor (low concentration and high ...

Abstract: This article presents the design of a versatile platform based on an Atmega 2560 microcontroller that combines the ability to produce hadal profiles, collect water and biological samples, ...

A recent study conducted at the Point Loma wastewater outfall in San Diego used a novel sampling technique, the Pelagic Laser Tomographer (PLT), in combination with traditional water column profiling ...

Modern eukaryotes were present, but marginalized, in ecosystems until no later than ~800 Ma or so, when the biosphere began transitioning to a eukaryote-rich state. Why eukaryotes diversified around ...

Apple is facing a lawsuit in the US over allegations that the blood oxygen sensor in its Apple Watch is racially biased against people with darker skin. The device includes a pulse oximeter which ...

I wore the world's first HDR10 smart glasses TCL's new E Ink tablet beats the Remarkable and Kindle Anker's new charger is one of the most unique I've ever seen Best laptop cooling pads Best flip ...

Creative Commons (CC): This is a Creative Commons license. Attribution (BY): Credit must be given to the creator. One of the most important methods of measuring the concentration of gaseous oxygen ...