Donald DeYoung is chairman of the science and mathematics department at Grace College in Winona Lake, Ind.

The Tallahassee Scientific Society is a group of laypeople, scientists, engineers and educators dedicated to increasing scientific literacy in Florida’s Big Bend area. They prefer texts to calls. Email through the website.

Richard J. Martinez an associate professor of management and the chair of the department of management, marketing and business at Houston Baptist University.

Russell W. Carlson is a professor of biochemistry and molecular biology at the University of Georgia in Athens and a fellow of the International Society for Complexity, Information and Design.

Hudson Kern Reeve is a professor at Cornell University’s department of neurology and behavior.

Philip Kitcher is a philosophy professor at Columbia University in New York City.

Robin Collins is a philosophy professor at Messiah College, an evangelical Christian school in Grantham, Pa. He has written several articles and papers about intelligent design.

Johanna Schmitt is a professor of evolution and ecology at the University of California, Davis. She previously served as as president of the Society for the Study of Evolution.

Jon Roberts is the Tomorrow Foundation Professor of History at Boston University.