The Difference Between Positive and Negative Atheism

I've always had a hard time differentiating between, you hear atheists always say there's a difference between positive atheism and negative atheism. Which view do you hold through your book and this talk? And can you help me identify the difference between the two? No idea. Positive, negative, it seems to me that the core of atheism is the declaration that God does not exist. Period. I saw Ben Stein's film expelled. Me too. The problem seems to be intractable. It's so much easier to believe in God. But who could blame them? Not me. You know what? Origins of life researchers are so stumped by the problem in terms of prebiotic chemistry