I graduated from Fordham College in 1964 with a B.S. in physics and from New York University in 1971 with a Ph. D. in physics. I became a science teacher for the New York City Department of Education in 1984, after working in sales and marketing for manufacturers of radiation therapy equipment. Since 1998, I have been working as a copyeditor and writer of science textbooks and ancillaries. I am a member of the Christian Speaker Network and am on the speaker list of The Shroud of Turin Website.