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

Nano-sensors that work without batteries or wires could pave the way for more comfortable, less obtrusive sleep and health ...

The Oura Ring 4 will cost $349 for Silver or Black, $399 for Brushed Silver or Stealth, or $499 for Gold or Rose Gold. In ...

A new study explains how birds maintain sharp eyesight despite their retinas lacking blood vessels, finally resolving a centuries-old biological paradox.

The light-sensitive tissue of birds’ eyes is not supplied with oxygen by blood vessels – instead, it powers itself with a ...

Tommy Liu builds a vehicle-mounted particulate matter monitoring system powered from harvested wind energy and an integrated ...

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