Lesson 19 Sustainability · Biodiversity · SDG 15

Does Darkness Need Protecting?

Experience a star-filled night sky, then notice what disappears under artificial light. Choose one investigation path - the Ecologist, the Human Scientist, or the Lighting Designer - fact-check an AI claim, and design an outdoor light that respects the night.

🕐 ~46 min total
📋 9 of 11 activities (choose your path)
🌌 3 investigation paths
🏅 DigComp badge
✦ Start Task 1 ↓ See all tasks
The Mystery
"Can something that is simply the absence of light need protection?" This question drives the entire lesson.
5
Phases
9/11
Tasks completed
~46m
Duration
3
Paths - choose 1
DigComp competences
1.1 - Browsing & filtering 1.2 - Evaluating digital content 3.1 - Developing digital content Badge: Night Protector L1
Lesson overview
Working on your own, you first experience darkness and a star-filled sky, then notice what disappears under artificial light. You discover when light becomes pollution - excessive, unnecessary, badly timed, or directed where it isn't needed - through ideas like skyglow, glare and light trespass.

You then choose one investigation path: The Ecologist (how artificial light affects wildlife), The Human Scientist (circadian rhythm and the body clock), or The Lighting Designer (direction, shielding, brightness, timing and colour). You ask the Wonder Learning AI your path's question, fact-check one of its claims, and create an output - then meet short summaries of the two paths you didn't choose.

The lesson closes by reconnecting the perspectives in a personal Darkness Web, re-voting on whether darkness needs protecting, then designing your own outdoor light that balances human safety with protecting the night - before a short summative test and the Night Protector - Level 1 DigComp badge.
Frequently asked questions
Can something that is simply the absence of light need protection?
Yes - darkness is a natural condition many ecosystems depend on. This lesson's central mystery is discovering why losing it has real consequences for wildlife, sleep and energy use.
When does light become pollution?
Artificial light becomes pollution when it is excessive, unnecessary, badly timed, or directed where it isn't needed - concepts like skyglow, glare and light trespass describe the different ways this happens.
How does artificial light at night affect wildlife and people?
It can disrupt nocturnal animals' behaviour and biological processes, and disturb the human circadian rhythm that governs sleep - this lesson lets students investigate one of these effects in depth through their chosen path.
How does the lesson end?
Students design an outdoor light that balances human safety needs with protecting the night, explain their design decisions with a scientific reason, then earn the Night Protector - Level 1 DigComp badge.
Your learning journey - 9 of 11 tasks across 5 phases
🌃
Phase 1 · Anticipation
What disappears when we turn on the light?
1 task
🌃
Task 1 · Phase 1
What Disappears When We Turn On the Light?
30 seconds of darkness, a star-filled sky, then a city sky with few stars. Vote: does darkness need protecting?
⏱ 6 min👁️ Visual + Poll
▶ Start here
💡
Phase 2 · Encounter
When does light become pollution?
2 tasks
💡
Task 2 · Phase 2
When Does Light Become Pollution?
A torch simulator, four slides - skyglow, glare, light trespass, overlighting - then who needs darkness.
⏱ 4 min🎞️ Slides
🔒 Locked
🔦
Task 3 · Phase 2
Put the Light Where It Is Needed
Light an object three ways - unshielded, upward, shielded downward - then two quick check questions.
⏱ 3 min🧩 Interactive + check
🔒 Locked
🔬
Phase 3 · Investigation
Who needs the night? - choose one path
2 tasks
🦉
Task 4 · Phase 3 · Path A
The Ecologist
How artificial light at night affects insects, birds, bats and plants. Build your Nightlife Map.
⏱ 11 min🧪 Lab · choose one
🔒 Locked
🧠
Task 5 · Phase 3 · Path B
The Human Scientist
Why the human body responds differently to light and darkness. Build your Body Clock Diagram.
⏱ 11 min🧪 Lab · choose one
🔒 Locked
🏮
Task 6 · Phase 3 · Path C
The Lighting Designer
Can outdoor lighting meet human needs while reducing impact? Build your Better Light Blueprint.
⏱ 11 min🧪 Lab · choose one
🔒 Locked
🔭
Task 7 · Phase 3
Meet the Other Investigators
Read short cards summarising the two paths you didn't choose, then save the finding that surprised you most.
⏱ 3 min🎞️ Slides
🔒 Locked
🕸️
Phase 4 · Discovery
Darkness is part of an ecosystem
1 task
🕸️
Task 8 · Phase 4
Darkness Is Part of an Ecosystem
Build your Darkness Web, consider AIR, WATER, SOIL, DARKNESS, then re-vote and reflect.
⏱ 7 min🪞 Reflection
🔒 Locked
📣
Phase 5 · Propagation
Design a light that respects the night
3 tasks
🔦
Task 9 · Phase 5
Design a Light That Respects the Night
Direction, brightness, time, colour, shielding - design a pathway light and explain three decisions.
⏱ 5 min🎨 Creation
🔒 Locked
🌠
Task 10 · Phase 5
Feedback & the Last Darkness
Review your design and two examples, then a final return of night mode: is darkness the same to you now?
⏱ 2 min🪞 Reflection
🔒 Locked
🏅
Task 11 · Phase 5
Summative Test & DigComp Badge
A six-item self-assessment, a five-question test, your completion card and the Night Protector badge.
⏱ 5 min🏅 Test
🔒 Locked

Ready to discover why darkness matters?

Start Task 1 and work through the journey at your own pace - it can even be split across two sessions. Choose one investigation path; the other two stay open as optional extensions.

🏅 Complete 9 of 11 tasks to earn the Night Protector - Level 1 DigComp badge

🌌 Start the journey