Matt Young, co-author of Why Evolution Works (with Paul Strode), tackles the most vexing issues in the public’s understanding of biological evolution and earth history. Young and Strode’s new book explains the concept of biological fitness, arguing that evolution, hardly random, is a process of interaction between organisms and the environment. Matt Young is a Senior Lecturer in Physics at the Colorado School of Mines and a retired Physicist with the National Institute of Standards and Technology, where he was awarded the Department of Commerce Gold Medal and various other honors. Previously, he was on the faculty at Rensselaer Polytechnic Institute and the University of Waterloo, and was a Guest Scientist at the Weizmann Institute of Science. He has 5 books in print, including a book on science and religion, and 2 books on evolution and creationism.