On summer nights, mayflies fly around the light. We look at them and think, What a small, insignificant life.They live for such a short time and disappear. But is it really so? From the point of view of life, they are making the greatest flight of their lives, following the light and giving everything they have in the final stage of their existence. There is no insignificant life in this world. And humans—what makes us so great? We walk around as the top predator on Earth as