Where did you get the idea for your most recent book?
I wanted to write a middle-grade sci-fi with some actual "sci" in it. I love reading fantasy and the paranormal but it really bugs me that we live in a world where most newspapers have a daily astrology column but refuse to have a science page even once a week. But for science, most of us wouldn't be here, which is a pretty big deal. So I thought I'd try and give science some kudos and write a fun, fast-moving adventure with science instead of magic. If alien invaders ever land on planet Earth they won't be riding unicorns or waving wands. But they will be terrifyingly good at math! The world's middle-graders need to be ready!!!!