Constantly wiping sweat from our brows isn't anyone's idea of a summer highlight. But the warm-weather annoyance and exercise byproduct could offer a goldmine of data about your body. A new device ...

Printable sweat-powered biofuel cells could replace bulky batteries in thin, flexible wearable health sensors.

Looking for ways to cool off and beat the summer heat? Think twice before wiping that sweat off your brow. Every drop of perspiration is a treasure trove of biochemical information, containing a ...