We want to believe, that humans are not the main cause of current global warming and climate changing. It is the sun getting brighter, planet receiving more and more energy and warming up. Question is if human’s dominion over nature caused this and what can be done about it. Is this temporary, is this real, is this caused by lack of nature, lack of water, or is this really caused by human’s activities. The Earth and nature has always found its own way to solve issues imposing troubles. Weather, climate, water, earth, population, food. Question is how the Earth is going to solve these problems now and what is it going to mean for humans. We are struggling with many issues. This work is about green roofs, their partial position as nature in the city and their position in every day human’s life. This work is about water and humans. Green roofs representing green in terms of benign integration of natural an artificial and green in terms of tool solving water retention issues. The work presents intended proceeding in order to fulfill the MEANDER vision.