Discovering the secrets of animal movement and what they can teach usInsects walk on water, snakes slither, and fish swim. Animals move with astounding grace, speed, and versatility: how do they do it, and what can we learn from them? In How to Walk on Water and Climb up Walls, David Hu takes readers on an accessible, wondrous journey into the world of animal motion. From basement labs at MIT to the rain forests of Panama, Hu shows how animals have adapted...

What doesn't have muscles but can still move? What helps our body get rid of dangerous toxins?The P Word: A Manual for Mammals is the definitive pre-puberty guide to the penis for young people. This easy-to-understand manual gives readers an overview of how and why penises work—and how to keep them healthy for years to come. More than just a boring anatomy lesson, it weaves scientific insights and surprising mammal facts together with accurate and engaging illustrations.Wri...