Rick answered my your first question for me so I will concentrate on the second.
If you note I specified "scientific evidence". Scientific evidence is a special category of evidence. It is objective evidence that supports or refutes a scientific theory or hypothesis. Creation "scientists", sorry they are such a joke that I cannot do that without the scare quotes, have been shown to be wrong so many times that they no longer create scientific hypotheses of their own and put them out for testing. Without a hypothesis of creation, and how creation happened does not need to be explained by such a hypothesis, one that explains the diversity of life in view of creation would also be a "hypothesis of creation", they can have no scientific evidence that supports their claims.
In other words if creationists want to claim scientific evidence for creation then the onus is upon them to develop some sort of testable hypothesis first. An untestable hypothesis is almost worthless in the world of science. That is why there is no existing scientific evidence for creation. They may have tried to do so in the past but they were so quickly debunked that they seem gun shy now. In fact that is one reason that they now have their own "peer review". Peer review is designed to catch the grossest of errors in a scientific paper on a new idea. Getting a peer review paper published does not mean your idea is correct, it is merely the first step in getting a new idea published. Creation scientists will not even take that first step these days.
Nor have they found any evidence that I am aware of for the other possibility. They could find objective evidence that refutes the theory of evolution and that would meet the other part of my statement, that there is no evidence against the theory of evolution. All claims that have countered it, such as Behe's have been shown to be incorrect.