With the development of technology and science, people’s life is getting more and more better and convenient. People have a better life but also with some serious problems. Because of satisfying people’s demand, we take as much as we want from the nature and the earth. When we start to care about the environment on the earth, it has become a very significant problem for everyone live on the earth. Therefore, Earth Day is the most sacred of international holidays. It is a time for reflection to the task of healing human societies and the nature world (Wheeler 492). However, we still need technology and science to find a way to keep the sustainability. There is emerging agreement that sustainability challenges require new ways of knowledge production and decision-making. One key aspect of sustainability science, therefore, is the involvement of actors from outside academia into the research process in order to integrate the best avail- able knowledge, reconcile values and preferences, as well as create ownership for problems and solution options (Lang, Wiek, Bergmann, Stauffacher, & Martens).
Every city has an area that is full of old and junk buildings and all the junk buildings have been wasted for a long time without using for anything. Knocking down the heritage of a city and building anew is rarely a popular choice. So retrofitting and finding new uses for old buildings is a firmly held smart city principle. New York has made one of the most visible moves in this direction with the High Line park, showing that an old municipal railway line can reintroduce green space into the city centre. London’s Tate Modern, too, transformed an old power station into an art gallery with spectacular success. Retrofitting buildings still in use, however, may be more important. To help hit its ambitious energy and water consumption reduction targets of 70% and 30% by 2030, Sydney is retrofitting 44 major buildings. Old on the outside, new on the inside – and ideally incorporating an element of micro-power generation on-top – they could become the defining symbol of a smart city (Cities get smart: urban innovation-in pictures). This urban innovation project of reused buildings provides a new method for the city because it improves water availability and efficiency of use. This urban innovation projects is conducted of community-based projects for resource sufficient residential architecture, resource recovery from municipal solid waste, wastewater treatment, and energy generation. Using architecture and urbanism as a tool for social development can bring surprising results in physical, functional and behavioral changes. In particular, the creation of new connections to break down city barriers between rich and poor can work as an instrument to contain and gradually eliminate violence in cities (Top Ten Urban Innovations).
In conclusion, in order to keep urban sustainability, the urban innovation projects are very significant and are a new way for for the urban sustainability. Innovations have two sides. One side is good for the development of the urban city, and the other side is when it is overused, it will also hurt the urban sustainability. Therefore, how to use the innovation is good for the urban sustainability is the most important thing for people to think about.
Wheeler, Stephen M. The View from the Twenty-Third Century (2008). P492-494. https://us130urbansustainability.files.wordpress.com/2016/01/the-view-from-the-twenty-third-century_wheeler.pdf
Lang, Daniel J. & Wiek, Arnim. Transdisciplinary research in sustainability science: practice, principles, and challenges. https://us130urbansustainability.files.wordpress.com/2016/01/transdiciplinary-research-in-sustainability-science_lang-et-al.pdf
Cities get smart: urban innovation-in pictures. The Guardian. http://www.theguardian.com/sustainable-business/gallery/cities-get-smart-urban-innovation-pictures
Top Ten Urban Innovations. Global Agenda. http://www3.weforum.org/docs/Top_10_Emerging_Urban_Innovations_report_2010_20.10.pdf