This is kind of what I imagine the future being, since we will need housing for the growing population, so instead of getting rid of greenry all together to make room, we will have green roofs everywhere! so when you take a stroll it will be from roof to roof, and with all the greenry, it will clean the toxics in the air! Hopefully I can work on a project like this in school.
Green roofs may be a newer phenomenon in many places, but Norwegians have been planting greenery atop their houses for hundreds of years. Some have flowers mixed in with grass, and a few even have small trees. The verdant roofs have many advantages like the fact that they help stabilize homes, provide good insulation and are long-lasting.
eat more plants
Folklore abounds about this flower found in the swamps of Hjaalmarch. Some stories claim it grows where unfortunate deaths have taken place, others insist it grows first and then lures unsuspecting people and animals to their doom. I have found no direct evidence to support these stories; indeed I found the flowers difficult to locate at all.