This is a fluorescently labeled section of embryonic human skin. The dark, diagonal slash through the center of the image is a hair follicle (1). The pink areas are stem cells in the hair follicles ...

The dream of battery-free devices has taken an unlikely turn, as Carnegie Mellon researchers debuted Power-Over-Skin. The technology allows for electrical currents to travel through human skin in ...

It has many important parts, including: Sweat glands in the skin release more sweat. The sweat evaporates, transferring heat energy from the skin to the environment. The hairs on the skin also ...