Who Needs the Dark?: The Many Ways Living Things Depend on Darkness
illustrations by
What’s inside...
This nonfiction picture book explains why natural darkness is essential for animals, plants, and people. From fireflies signaling to mates, to sea turtles navigating by moonlight, to our own bodies needing night for healthy sleep, author Laura Alary guides readers through engaging nighttime scenes. The text introduces the science of circadian rhythms, the environmental impact of light pollution, and simple steps children can take—like turning off outdoor lights—to help protect dark skies for all living things.
Age
5-8
Length
40 pages
Text complexity
Discussion points
What nighttime sounds have you heard in your neighborhood?
How might turning off one light help an animal?
Why do you think stars are harder to see in cities?
How does your body feel after a good night’s sleep?
Tip: Role play these questions
Take a flashlight walk and compare lit vs. unlit areas.
Create a simple star map together after reading.
Key lessons
Example Lesson: Nature relies on balance between light and dark.
Explanation: Examples of plants resting and animals feeding only at night.
Real-World Application: Encourage regular lights-out times indoors and outdoors.
Example Lesson: Small choices have big environmental impact.
Explanation: Turning off porch lights helps migrating birds.
Real-World Application: Use motion sensors or shielded fixtures at home.
Example Lesson: Curiosity sparks stewardship.
Explanation: Stargazing scenes lead children to ask questions about the sky.
Real-World Application: Visit a local planetarium or dark-sky park.
Example Lesson: Rest is essential for growth and health.
Explanation: Human circadian rhythm section links darkness to sleep.
Real-World Application: Maintain consistent bedtime routines with low light.