The best-selling author of the Baby Loves Science series levels up with this playful STEM picture book introducing kids (and grown-ups) to aerospace engineering. Do you want to know a secret? Sometimes grown-ups need YOU to explain things to THEM. Like aerospace engineering! In this tongue-in-cheek guide, an in-the-know narrator instructs kid readers in the fine art of explaining aerospace engineering to a grown-up. Both children and their adults learn how birds, airplanes, and spacecraft fly. Along the way, they explore air pressure, lift, thrust, and drag. Fun and fact-filled, the How to Explain Science to a Grown-Up series empowers kid experts to explore complex scientific concepts with any grown-up who will listen.