Some of the most fascinating topics covered this week are: Sports (For Djokovic, goal is more than titles; She is 35 and running faster than she ever thought possible), Science (Does evolution of decision-making go back millions of years?), Technology (Race for cheap airfare, it's you vs. the machine), Society (The biggest untapped resource in the world) and Leadership (If you want others to follow, learn to be alone with your thoughts).