STEM topics are hot right now, and these informative new books from the How Do? series (2 new titles) address broad scientific fields in a playful way. The books feature silly cartoon illustrations that may appeal to readers but often overwhelm the text on the page. It doesn't help that the font is small and looks a bit amateurish. Silly, but not especially funny, questions and answers introduce each topic. If readers can get past these distractions, though, they will be richly rewarded. The main content in these books is quite engaging. The information, presented casually, goes somewhat beyond the basics of each scientific field without presuming prior knowledge. In How Do Computers Follow Instructions? Liso introduces Booleans, if-else statements, and loops in ways that feel fresh and effortless. Table of Elements to make a difficult topic more palatable. In the back matter, a glossary and various infographics and diagrams round out each book. It is unfortunate that the look of the books does not better match the high-tech information they contain, but the heart of the books remains educational and interesting.