It’s time for another Make Me Smart Explainathon, where we answer as many of your questions as we can about the things you want to know more about. We also have an answer to our Make Me Smart question from a listener, and we picked the final book for our 2017 Make Me Smart Book Club. It’s “A Wrinkle in Time” by Madeleine L’Engle, which is being adapted for the big screen next year by Academy Award-nominated director Ava DuVernay.