This isn't a formal submissions process. It's closer to an open door.
If you've been chewing on the same kind of question this newsletter chews on — science, faith, and the strange places they overlap — I'd genuinely like to hear it. A topic you can't stop thinking about. A piece you've written. A half-formed idea. A good argument with something I got wrong. A story you saw up close. Send it over and we'll kick it around.
A pen name is fine. I don't need your real one, and I won't put it anywhere you don't want it. If you're making a factual claim, bring a source, since that's the one rule the whole thing runs on. Otherwise, just write like a person. I read everything.