25 Hot Topics for a New Book

I had previously mentioned that a Christian scholar and myself are co-writing a book. We've just made it out of the planning stage. We had to have a book proposal with a promise of appealing to readers. Well, we've settled on one tentatively titled "God or Godless? Fifty Five Minute Debates." It will be designed for people who want some short answers (500 words each) to hot topics surrounding the theist/atheist debates. I am to come up with 25 hot topics and he will come up with 25 more. While I don't think short answers get the job done right, they can be interesting and informative just the same. Which ones would you suggest for me?