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

VO2 max is an intimidating word for an easy-to-understand biometric: It’s how well your body uses oxygen when you push ...

New research reveals how ocean viruses burst algae cells, fueling a subsurface oxygen band through rapid microbial recycling.

A team of scientists announced Tuesday they have developed new deep-sea landers specifically to test their contentious ...

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 ...

When fire breaks out in the low-gravity, high-stakes conditions inside spacecraft or space stations, it behaves very ...

No smoke machine? No problem. Learn how to check for engine vacuum leaks using visual cues, soapy water, and DIY tricks to ...

We can't get enough of our Suunto Vertical 2 — this rugged smartwatch has everything athletes and outdoor explorers may ever ...

New research suggests that the Earth's solid inner core is softer and more dynamic than previously thought, changing ideas.

However, hydrogen hasn’t yet caught on as a large-scale solution largely due to funding, even though even the US Department ...

NASA's X-59 supersonic demonstrator sits partially disassembled at Armstrong Flight Research Center following its October ...

Our in-depth test and review of the OnePlus Watch Lite, the brand's debut entry-level smartwatch. Discover our full verdict.