Sleep trackers use your resting heart rate, heart rate variability and breathing data to estimate how long you sleep and how much time you spend in each stage.

The European Space Agency is developing a spacecraft structure that can detect its own damage and repair itself in orbit, a ...

Central Plains farmers are emerging as a model for low-carbon rice, cutting methane, raising value and opening export opportunities ...

Solid rocket motors—and the chemicals that fuel them—are a major limitation on America’s missile stockpiles, and one that cannot be solved by additional funding alone.