Constance Kalbach Walker, Scientist, served as the senior research scientist (retired) at Triangle Universities Nuclear Laboratory, Physics Department at Duke University in NC. She is one of the pioneers in the study of preequilibrium nuclear reactions. Constance became a Christian in 1975 and has been interested in the relationship between the findings of science and the message of the Bible since. She authored, along with her late husband William Walker, The Heart and Hand of God: Perspectives on Christianity and Science.