"If fireflies glow in the dark, why can't we?" From lightning to lightning bugs, nature creates its own light in a spectacular variety of ways. Zoey discovers that we humans have also learned to harness nature's elements to light up our lives. We learn about fireflies, lights for communication, glowing marine creatures, luciferin, bioluminescence, biofluorescence, black light, comets' glowing tails, lightning, forms of night lighting, and light bulbs.