John J. Ratey

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<DIV><B>John Ratey, M.D.</B>, is a clinical professor of psychiatry at Harvard Medical School. He is the author of numerous bestselling and groundbreaking books, including <I>Spark</I>, <I>Driven to Distraction</I>, and <I>A User's Guide to the Brain</I>. He lives in Cambridge, Massachusetts. <br><br><B>Richard Manning</B> is an award-winning journalist. He is the author of eight books, including <I>One Round River</I>. His work has appeared in <I>Best American Science and Nature Writing 2010</I>, <I>Harper's</I>, the <I>New York Times</I>, the <I>Los Angeles Times</I>, and other publications.</DIV>