*Astrophysicist, Department of Astrophysics and Hayden Planetarium, American Museum of Natural History, New York, N.Y.
*Author, How the Mind Works (W.W. Norton and Company, 1997); The Language Instinct (Paperback: Harper Perennial, 2000 ), The Blank Slate: The Modern Denial of Human Nature (Viking/ Penguin Putnam, 2002)
*Peter de Florez Professor of Psychology, Massachusetts Institute of Technology, Cambridge, Mass.
What makes us who we are? In his new book, The Blank Slate: The Modern Denial of Human Nature, psychologist Steven Pinker argues that much of who we are is in our genes. In this hour, we'll talk with Pinker about his book, and his thoughts on the intersection of biology and sociology. Plus, scientists have discovered the biggest object in the solar system since Pluto.