We are in the midst of a global remix. Disciplines merge and cross-pollinate. Technology intrudes into biology and society. Power and authority are redistributed. Boundaries shift -- or disappear. Hopes and anxieties collide. A new world is emerging at the intersection of once-separated realities, and everything we think we know might just be wrong. TEDGlobal 2013 will bring together those who challenge us to pause for an instant and Think Again.