When millions of people in Southern California, and neighboring Arizona and Mexico, were plunged into the dark and left without power for several hours in early September , everyone wanted to know how such a massive outage could happen. When the lights came back on, it seemed to be just one worker’s fault , but that employee’s error doesn’t explain how widespread the blackout was. more › See more here: Why Did That Huge SoCal Blackout Happen? Officials Still in the Dark