We use electricity in a number of science projects and think of it as something that is man made or artificial. Just how untrue that is gets proved when we see that most living animals have neurons which work on electrical currents.

These specialized cells of the body move information from organs to the brain in electrical form. This helps the brain keep better control over the body. In a blink on an eye the brain knows that it has stubbed its toe from the pain receptors being activated by such electric currents.

Hands know that a surface is hot when touched for a fraction of a second. Again thanks to the neurons which quickly transmit the information to the brain. The hands are then guided away from the source of the heat by the brain so that they will not be hurt.

The best part is that all these actions and electric currents flow through the human body without ever actually engaging the conscious mind. Like a well tuned machine functioning on auto pilot. It goes through the entire process with no problems at all. Wish all machines were so easy to handle.