Orange rocket launching in front of a yellow clock face with the words 'FUTURE TIME' curved around it.

Rooftop Greenhouses

Tomorrow's Urban Green Spaces

If you could design the ultimate future rooftop greenhouse, what would you build?

Future World-Building Scenario

Imagine it’s the year 2031. You work as a designer for an urban farming company.

Your mission: Design a rooftop greenhouse model that grows food and provides a relaxing space for residents.

What will your future rooftop greenhouse look like?

Click to see what Orbot built!
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But let’s begin with the past!

The first greenhouse was invented to:

Protect tropical plants explorers brought home to Europe
Protect tropical plants explorers brought home to Europe
Grow melons all year round
Grow melons all year round
Grow sour gummy worms for kings
Grow sour gummy worms for kings
Correct! Way to go!
The correct answer is...grow melons all year round!

In the year 30 C.E., Roman Emperor Tiberius ordered that the first greenhouses be built so that he could grow and eat melons all year round. Much later, In the 1500s, Italian explorers started to use greenhouses for their exotic plants from tropical countries.

What translucent mineral was used as the "glass" for these Roman greenhouses?

Selenite
Selenite
Halite
Halite
Futurite
Futurite
Correct! Way to go!
The correct answer is...selenite!

Selenite was mined in Spain. Romans used thin sheets of selenite to let in light before flat glass panes existed. Designers often repurpose available materials—a timeless systems-thinking move.

One of the fanciest greenhouses of the 1600s was at the Palace of Versailles in France. What was grown there?

Orange Trees
Orange Trees
Pineapples
Pineapples
Spaghetti
Spaghetti
Correct! Way to go!
The correct answer is...orange trees!

Versailles’ Orangerie housed hundreds of orange trees. Greenhouses became symbols of status and innovation—showing how culture shapes design goals.

Now, why did greenhouses end up on our roofs?

Rooftop gardens bring what benefits to the environment?

Filtering stormwater runoff
Filtering stormwater runoff
Attracting pollinators
Attracting pollinators
Giving the environment money to buy candy
Giving the environment money to buy candy
Correct! Way to go!
The correct answer is...1 and 2!

Plants soak up rain and reduce stormwater runoff, and flowers support pollinators. Greening rooftops helps whole urban ecosystems work better together.

What energy source do many rooftop greenhouses use?

Gasoline
Gasoline
Solar Power
Solar Power
Fairy Dust
Fairy Dust
Correct! Way to go!
The correct answer is...solar power!

Rooftops get strong sunlight, making solar panels a smart choice. Using on-site renewable energy reduces pollution and operating costs.

Finally, how might rooftop greenhouses help those living in cities?

They make rooftops look prettier
They make rooftops look prettier
They grow fresh food close to where people live
They grow fresh food close to where people live
They give pigeons a place to have picnics
They give pigeons a place to have picnics
Correct! Way to go!
The correct answer is...they grow fresh food close to where people live!

Growing food close to people reduces transportation and keeps produce fresh. It can also turn unused roofs into shared community spaces.

Ok, now let’s go into the future!

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Power-Glass

Future Signal:

Power-Glass

What if your greenhouse made its own electricity?

Power-glass is a new kind of clear solar panel that acts like a window and collects energy from the sun. This lets greenhouses power their fans, lights, and water systems all by themselves—right on the roof!

Now, time for our

Rooftop Greenhouses

Design Challenge

Mission Details:

Year: 2031

Mission:

Design a rooftop greenhouse model that grows food and provides a relaxing space for residents

Build Elements:

Plants

What kinds of plants will you grow?

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Comfort

How will people feel cozy and happy?

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Energy & Farming

How will your greenhouse make and use energy to grow food in smart ways?

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Build Examples:

Let's get building!

  1. Draw your design
  2. Use craft materials to build a model
  3. Take a picture of your design/model, upload it to ChatGPT, and ask it to bring your build to life!
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Want us to send you special materials?

Click here with your parents to learn more!

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