Nancy Koehn, Harvard Business School historian and editor of "The Story of American Business."

Michael Beer, Harvard Business School professor and coauthor of "Higher Ambition: How Great Leaders Create Economic and Social Value."

Douglas Conant, former CEO of Campbell's Soup Company.

Steven Levy, senior writer at Wired and author of "The Perfect Thing" and "Insanely Great."

Sir Michael Rake, chairman of BT Group, and Alastair Campbell, Tony Blair's former communications director, sat down with editor in chief Adi Ignatius at the launch of Harvard Business Review's London office.

Francis Ford Coppola, acclaimed film director.

Muhtar Kent, CEO of Coca-Cola.

Sylvia Ann Hewlett and Ripa Rashid, authors of "Winning the War for Talent in Emerging Markets: Why Women Are the Solution."

Jib Ellison, founder of Blu Skye and coauthor of the HBR article "The Sustainable Economy."

Fred Reichheld and Rob Markey, authors of "The Ultimate Question 2.0."