Zachary Karabell President, River Twice Research

Zachary Karabell is the co-author of Sustainable Excellence: The Future of Business in a Fast-Changing World, written with Aron Cramer and published by Rodale in October 2010. He is also the author of Superfusion: How China and America Became One Economy and Why the World's Prosperity Depends On It (Simon & Schuster 2009). He is President of River Twice Research ( and River Twice Capital, as well as Senior Advisor to Business for Social Responsibility. Until 2008, he was portfolio manager, chief marketing officer and the chief economist for New York-based investment firm Fred Alger Management. His previous books include The Last Campaign: How Harry Truman Won the 1948 Election; A Visionary Nation: Four Centuries of American Dreams and What Lies Ahead; Parting the Desert: The Creation of the Suez Canal; Peace Be Upon You: The Story of Muslim, Christian, and Jewish Coexistence ( Knopf 2007); and a very short book about a very obscure US president, Chester Alan Arthur. Educated at Columbia, Oxford and Harvard, he writes for a variety of newspapers and magazines, including Time, Newsweek, The Los Angeles Times, The Wall Street Journal, Foreign Affairs, The Washington Post, and The New York Times. He is a regular commentator on CNBC and an occasional ensemble member of the Fast Money crew. He has also appeared on CNN, the History Channel, and BookTV.

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