There's something in the air--pollen, dust mites, mold spores, dust, goose down, cat hair, pepper, flu viruses, and bright light--that's causing these nine kids to sneeze. Vivid, full color micrographs show the pesky allergens and irritants that cause the sneeze reflex, while simple scientific text explains how the impulse to sneeze is created inside the body. Glossary and other resources included.