People and animals alike have a need for speed, whether to hunt prey, travel faster, or for the sheer thrill of breaking the sound barrier. This exciting series highlights the world’s fastest things, exploring how they achieve those record-setting speeds. Each book pairs short paragraphs of easy-to-read-text with plenty of colorful photos to make reading engaging and accessible. Apex books have low reading levels (grades 2-3) but are designed for older students, with interest levels of grades 3-7.