How electricity was changed our lives?

  To answer this question you just have to look back a few hundred years to a time when sunrise and sunset determined the length of the working day-if there was no oil left to light a lamp; when it took weeks for news to get about-if the messenger survived the journey; when passing on even a brief message could involve a lengthy hike; when data was stored in the brain, rarely on paper. In all these areas, the harnessing of electricity has helped us overcome the limitations of mind and body.