When it’s dark out, we need light to see. But what if your body could make its own light? From acclaimed author-illustrator Julia Kuo comes a remarkable picture book about bioluminescence, the light made from living things, and its many forms: fireflies and foxfire, fungi and glow-worms, deep-sea fish and vampire squids. Kuo’s radiant art portrays a young child and adult discovering different bioluminescent creatures, accompanied by simple lyrical text and informative sidebars that reveal fascinating scientific facts about each of them. An introduction to an extraordinary natural phenomenon, Luminous shines a light upon how truly wondrous the world is.