He is active in the public understanding of science and has broadcast extensively on radio and television. The latter includes the Royal Institution Christmas Lectures delivered in 1996. A Christian, he believes in theistic evolution and opposes intelligent design but believes in an intelligent designer. He has participated in science and religion debates, including arguments against intelligent design on the one hand and materialism on the other. In 2005 he gave the second Boyle Lecture. He has lectured at the Faraday Institute for Science and Religion on "Evolution and fine-tuning in Biology". He gave the University of Edinburgh Gifford Lectures for 2007 in a series titled "Darwin's Compass: How Evolution Discovers the Song of Creation". In these lectures explained why evolution is compatible with belief in the existence of a God.