White, 63, said he was raised as an atheist, and after earning a doctorate in chemistry, embraced evangelical Christianity in 1964.
He says that when he is asked to speak to science classes, he challenges the accuracy of radioactive dating which shows the world to be thousands of millions of years old and says that the Bible is a more accurate description of how mankind began. He personally believes the Earth is between 6,000 and 12,000 years old.
"Usually I find the discussion goes on science, science, and science and then when the lesson is finished one or two students say, 'Can we talk about other things?' and I sit down with them and usually they want to talk about Christianity," he said. "They want to know, why do you believe in God? Why do you believe in the Bible? How can you be sure it's the word of God?"