Deborah and Loren Haarsma are scientists who together wrote the book Origins: Christian Perspectives on Creation, Evolution, and Intelligent Design (Faith Alive, 2011). Deborah is an astronomer and the former president of BioLogos (biologos.org). Loren is a professor of physics and astronomy at Calvin University and the author of When Did Sin Begin? Human Evolution and the Doctrine of Original Sin (Baker, 2021).