What is life? And how can it be better lived? We invite you on a journey of tantalizing mystery and thrilling possibilities at TEDGlobal 2011. During four days, with 50-plus speakers and performers from all over the world, in the energizing city of Edinburgh, we will look at who we are, what we do, and how we relate to each other and to other living organisms. We will analyze the resources, technologies and skills that make life possible and keep it going -- and the many things that make it interesting, enjoyable and worthwhile. We will explore themes that are basic to our humanity, and those that threaten it.