In a clip from her TEDx talk "Durable Humans are Smarter Than Their Phones," health journalist, child advocate and tech hygienist Jenifer Joy Madden explains why kids who have rich, 3-D full-sensory upbringings have bushier, more neutrally interconnected brains, whereas kids who spend too much time in a 2-D screen environment may have truncated brain development. The first of the Broccoli Brain video series animates the concept in the "Tech Hygiene Hint #1: Live a Balanced Life."