Fifty-five years ago, preschoolers were captivated by the TV performance of a fuzzy blue monster, two striped shirt-wearing best friends and a big yellow bird. Today, in the now-crowded field of ...

The brightly colored "CoComelon" cartoons have become must-watch videos for babies and toddlers. But they've also raised questions about what kids should be viewing.

Patrick Reese, general manager of CoComelon, stands near a shelf of toys ... two striped shirt-wearing best friends and a big yellow bird. Today, in the now-crowded field of children's media ...