We like designing sustainable things.
Here is an algae growing sustainable bus stop. It turns CO2 and NOx along with light into oxygen. Also the algae can be used to create either fuel, plastic, or be used as a food source.
The idea of the SustaBus Stop is to be a community initiative that also provides meaningful education to people about the exponential benefits of algae.
We also would like to integrate more ponds in cities.. that would be connected to green houses and provide food to people in need. Permaculture needs to be permanently ingrained in modern society.