Welcome to the world of bioluminescence: the generation of light by living things. From flickering fireflies in Northeastern backyards to bizarre fishes illuminating the deep ocean’s perpetual dark, the tree of life is spangled with organisms that blink, glow, flash, and glitter. How do organisms use bioluminescence, and how do scientists study it? Rare in land animals, the ability ... https://www.amnh.org/explore/science-topics/bioluminescence