Gross Universe: Your Guide to All Disgusting Things Under the Sun

From mucus and vomit to fossilized dinosaur droppings, Gross Universe takes readers on a tour of the most revolting aspects of the natural world. Each chapter explains the scientific purpose behind these seemingly gross phenomena, revealing why scabs form, how saliva protects teeth, and why pus is actually a helpful secretion. Irreverent drawings and quick facts keep the information accessible and lively for middle-grade readers. The guide turns everyday disgust into fascinating biology, showing that many repulsive things have surprising and important functions.