More than 70,000 households were left in the dark for hours due to a blackout in New York's Manhattan on Saturday evening, temporarily trapping people in subway cars and elevators while causing cancellations of Broadways shows and concerts.The major power outage, attributed to a mechanical failure, darkened Times Square's famous electronic billboards. Power was fully restored by midnight and there were no reports of injuries, according to U.S. media.In Broadway, most theaters canceled their night-time performances, while singer Jennifer Lopez had to cut short her concert at Madison Square G…READ FULL ARTICLE