The scientist, Neil deGrasse Tyson, who is often claimed by atheists, explains:
Richard Dawkins also recently reiterated that he's an agnostic, not an atheist:
So, how does Dawkins square his public persona with his lack of certitude? Easily. No matter how strongly Dawkins is associated with atheism, he is first and foremost a scientist. Therefore, "the existence of God is a scientific hypothesis like any other," he claims.