With the Loop, Polar is clearly coming for Whoop. Like its inspiration, the Polar Loop is a screenless fitness tracker that measures your activity, heart rate, and sleep with a de ...

Zen digesters” rarely fart. “Hydrogen hyperproducers” fart a lot. Scientists are investigating what is typical.

While fuel cells generate clean energy, fuel cell sensors generate precise measurements and are a gold standard for breath alcohol analysis.

Maeve O’Neil, a 19-year-old freshman at George Washington University, knew she was sick — but had no idea just how dire it ...