Yes, we all know it's the right thing to do. But Michael Kimmel makes the surprising, funny, practical case for treating men and women equally in the workplace and at home. It's not a zero-sum game, but a win-win that will result in more opportunity and more happiness for everybody.

Kevin Allocca is YouTube's Head of Culture & Trends, and he has deep thoughts about silly web video. In this talk from TEDYouth, he shares the 4 reasons a video goes viral.