Dr. David A. Humphreys is Emeritus Professor of Chemistry at McMaster University, in Hamilton, Ontario. The recipient of numerous awards, a text book author, and leader in science education, he is noted for making science accessible to the public.

He received his B.Sc. and M.Sc. from the University of London, England, where he taught chemistry before moving to McMaster in 1965. He received his Ph.D. from McMaster in 1969, where he remained to become a full Professor of Chemistry.

Dr. Humphreys has won national and international awards in both science and education. He has been visiting professor in Beijing, China; Gotoborg, Sweden; Durham, England; and the HERDSA Fellow in Australia and New Zealand.

He is a Fellow of the Chemical Institute of Canada, an Honourary Lifetime Fellow of the Canadian Society for Teaching and Learning in Higher Education, and a former Honourary President of the Science Teachers Association of Ontario. He is a Fellow of the American Scientific Affiliation, and Executive Director of the Canadian Scientific Christian Association.