Greening the City: Designing Nature-Based Systems MDI are experts at integrating green infrastructure into urban infill projects. Habitat plantings on rooftops, large trees within the city’s busy streetscape, rain gardens over underground parkades – these are all creative solutions to fitting nature into tight urban spaces. These green infrastructures provide valuable benefits to the city and its inhabitants, including improving the health and well-being of people, improving the marketability of new developments, buffering against the impacts of climate change, and supporting the many non-human species that make the city home. Getting them built requires collaboration, problem solving and technical know-how. Prepare to sharpen your pencils as you come on a journey with MDI to learn about some of the technical details involved in integrating nature-based systems into our buildings and streets.