Half a century ago at Superbowl I, there were 30,000 empty seats, college marching bands supplied the halftime entertainment, and no one remembers the ads. (To put things in perspective, Lyndon Johnson was President, The Sound of Music won the Oscar, and the Green Bay Packers beat the Kansas City Chiefs.)

Fast forward to the Denver Broncos vs. the Carolina Panthers and Levi’s Stadium, the sparkling Santa Clara home of the San Francisco Giants and Superbowl 50. Read more