TED Fellow Joy Sun helped to launch a rare type of charity. GiveDirectly lets donors transfer money directly into the hands of impoverished people — empowering them to set their own goals and priorities.
Gary Vaynerchuk's Wine Library TV combines an irreverent approach to wine and a shrewd social media strategy. It won him web fame and the cachet to spin off book deals, new businesses and his own entrepreneurship consulting firm.
Alexander Wagner balances two passions: the thrill of seeking knowledge about fundamentals of human behavior for knowledge's sake, and the desire to apply insights in the real world and to improve the workings of markets and organizations.
Britain's former prime minister Gordon Brown played a key role in shaping the G20 nations' response to the world's financial crisis, and was a powerful advocate for a coordinated global response to problems such as climate change, poverty and social justice.