Todays featured author, Carmella Van Vleet is the author of both fiction and nonfiction for middle grade including co-authoring TO THE STARS! (Charlesbridge Publishing, 2016) with astronaut Kathy Sullivan. Her most recent release is called AVIATION: COOL WOMEN WHO FLY (Nomad Press, 2016). I asked Carmella about her success with writing nonfiction for middle grade readers. …