A full 40 percent of scientists believe in a personal God and afterlife, according to a 1997 study.
“Although the suggestion 80 years ago that four in 10 scientists did not believe in God or an afterlife was astounding to contemporaries, the fact that so many scientists believe in God today is equally surprising,” said study organizers Edward Larson and Larry Witham, of the University of Georgia, in the journal Nature.
The duo replicated a study from 80 years prior conducted by James Leuba that shocked America at a time when faith enjoyed wide acceptance. He found that four of 10 scientist didn’t believe in God.

Stephen Hawking opted to not believe.
Leuba “predicted that more and more scientists would give up their belief in God, as scientific knowledge replaced what he considered to be superstition,” writes the National Center for Science Education in an article “Do Scientists Really Reject God?”
Leuba would be disappointed. The 1997 iteration of his poll found the percentage of faith-holding scientists remained constant through 80 years of scientific and technological advance. Science has not dislodged belief in God, and the number of theistic scientists is “impressively high,” according to the New York Times.

Francis Collins does believe.
“The results also indicate that, while science and religion often are depicted as irreconcilable antagonists, each a claimant to the throne of truth, many scientists see no contradiction between a quest to understand the laws of nature, and a belief in a higher deity,” the New York Times wrote.
What’s more, the narrowly-phrased questions designed by Leuba — and repeated by Larson and Witham — may have overstated disbelief, according to Rodney Stark, a professor of sociology and comparative religion at the University of Washington in Seattle, as quoted in the New York Times. Stark’s research indicates that scientists pretty much reflect the general American public when it comes to believing in God.
“To the extent that both surveys are accurate readings, traditional Western theism has not lost its place among U.S. scientists, despite their intellectual preoccupation with material reality,” Larson and Witham wrote in their study. Read the rest of the article.