Science and our Existence
Does God Exist? provides a list of scientific values that if changed in value would result in life on Earth not existing. There's a number I hadn't seen before and a number I don't know enough science to comment.
I find these lists interesting but not dispositive. They really don't prove God's existence the way some people who use them claim. They're still cool, though, since they show how fragile life can be and how our mere existence is a miracle in and of itself.
Hat Tip: Steve Ray