The white and red parts are the hottest and so are losing most heat. Orange and green represent medium temperatures, and blue and purple are the coldest parts. It is easy to see that the heads of ...

The sweat evaporates, transferring heat energy from the skin to the environment. The hairs on the skin also help to control body temperature. The hairs lie flat when we are warm, and rise when we ...

You may not have considered your own body heat as renewable energy that could be harnessed ... turn the temperature difference between the human body and surrounding air into electricity ...