With her viral talk from TED2012 and her mega-bestseller "Quiet," Susan Cain urged society to cultivate space for the undervalued, indispensable introverts among us. Now, with her new bestseller "Bittersweet," she's back to explore the surprising lessons sorrow and longing teach us about creativity, connection and love.
Clay Shirky argues that the history of the modern world could be rendered as the history of ways of arguing, where changes in media change what sort of arguments are possible -- with deep social and political implications.
2005 TED Prize winner Edward Burtynsky has made it his life's work to document humanity's impact on the planet. His riveting photographs, as beautiful as they are horrifying, capture views of the Earth altered by mankind.