Rooftop Farms: Sky High Salad

📝 Transcript

[Adrit] Welcome back to Adrit's Wonder Lab! Today we are going up. Way up. To the top of a building, where there are farms in the sky.

[Adrit] Rooftop farms are exactly what they sound like: gardens growing on the roofs of buildings. Some are just a few pots. Others are huge, with rows of lettuce, tomatoes, herbs and even beehives, right above a busy city street.

[Adrit] Why put a farm on a roof? Cities have a problem called the heat island effect. All that concrete and dark road soaks up the sun and makes the city hotter than the countryside around it. Plants do the opposite. They shade the roof and let out water vapour, which cools the air. A green roof can make the space underneath it much cooler, so people use less air conditioning.

[Adrit] Rooftop farms also catch rainwater instead of letting it rush into drains, and they give bees and butterflies somewhere to visit in the middle of the city.

[Adrit] And here's the tasty part: food grown on a roof only has to travel down the stairs to get to your plate. No trucks, no planes, no packaging. That means way less pollution — and much fresher salad.

[Adrit] You don't need a whole rooftop to try this. A balcony, a windowsill or even a sunny step will do. Lettuce, spinach, basil and mint are all happy in a pot. My tip: pick the outer leaves of lettuce instead of pulling up the whole plant, and it will keep growing for weeks.

[Adrit] So next time you look at a city, imagine every grey roof turning green. That's a lot of salad. Thanks for exploring with me. 🌱🏙️🥬