The issue of food security has affected the well-being of the people for centuries. Academic and industry experts have been constantly developing alternate and better ways to address this issue. One of such innovations is the concept of vertical and zero acreage farming for providing food security and ensuring environmental sustainability. However, this concept has been in its nascent stage, and its development has been sporadic for many years. This paper uses a comprehensive framework to conduct a feasibility analysis of initiating vertical farming on university campuses, which could set an example for using this technique on a large scale. A case study was conducted on a set of 24 canteens across a university in Wuhan, China for accessing the return on investment and food sufficiency using this technique. By using the central limit theorem, a model was developed after investing in 24 canteens in the university, and various scenarios were analyzed. The breakeven on implementing these farms was about 10 to 20 years, with annual profits reaching $92,000 (592,000 RMB).

In the context of ecological building and green building popularity, building sustainability assessment is becoming more and more important. In this paper, a comprehensive evaluation platform by coupled LCA method and energy method was designed, verified, and analyzed to assess the sustainability of the building system. The main results illustrated that the construction stage is the most critical stage in terms of emergy angle. From a sustainability perspective, the Emergy Sustainability Indicator was at a moderate level (1.0141), which can be considered to increase the proportion of renewable energy and reduce the proportion of non-renewable resources to improve the sustainability degree. Of the three scenarios designed, the second scenario has the best sustainability in the building system. The unit emergy value of the whole building was also shown to demonstrate the unit emergy of an individual. In order to verify the accuracy of the data, a sensitivity analysis was conducted. Finally, two types of positive measures are proposed to ameliorate the environmental sustainability in the building system, containing the increasing proportion of renewable energy and using recycled building materials.

Ecologically sustainable buildings and their carbon emissions are two popular ideas for building life cycle systems. It is a challenge to comprehensively assess the sustainability of building cases using two different methods. Based on over a decade of research, this paper attempts to explore the possibility of quantitatively integrating both approaches. In this study, we adopted the emergy method and carbon emission approach to assess and analyze a building system. In particular, similarities and differences have been identified through emergy and carbon emissions at each stage of the building’s whole life cycle. The results demonstrate that the building operation phase is the critical contributor (Approximately 79.6% of the total emergy and 97.9% of the entire carbon emission), which occupies the most emergy and carbon emission amounts of the whole building system. In order to improve the ecological sustainability of the building system, renewable energy subsystems are considered and explored. While the overall sustainability of the building system is enhanced, the new systems will aggrandize the carbon emissions. Therefore, the ecological sustainability of building systems and carbon emissions should be considered comprehensively, and the relationship between the two views needs to be balanced.

The world is facing several global issues such as food and energy crisis, climate change and greenhouse gases emissions. To subdue these issues, many entities from academia and industries have innovated alternate techniques of performing regular activities which cause such problems. One of these innovations is the introduction of vertical and zero acreage farming in the field of sustainability. These carry the potential to solve one of the most important affairs of food security in most countries of the world. But, this technology has been in its nascent stage for many years. This paper uses a comprehensive framework proving the feasibility of initiating vertical farming on university campuses to feed the staff and students, which could also set an example to the rest of the world into using this technique on a wider scale. The study chose Huazhong University of science and technology (HUST) in Wuhan city, China for accessing the return on investment and food sufficiency if vertical farming is implemented. Using Central Limit Theorem, a statistical model was developed, and various scenarios were analyzed. The results indicated that if a separate vertical farm is constructed, the breakeven can be achieved in a range of 10-20 depending on parameters such as type of operation, number of floors and amount of vegetation. The study has shown that the use of vertical farming cannot only bring in revenue for the campus but also aid in mitigating climate change.

Transportation Infrastructure has remained a key element for the economic and social development. Especially in developing countries, the demand for new roads and maintenance of existing roads is very high as they depend on the overall economic development. These calls for transforming the methods the roads are being constructed. Recent studies have shed light on the concept of making transportation system greener and more sustainable, which can be a fast track to achievie the goals of saving the planet from further generations. One of the effective ways of addressing this issue is by substituting or replacing pavements layers by sustainable alternate materials. Promising alternate materials have been investigated in road construction-specifically using recycled wastes. The purpose of this study is to analyze the environmental significances of alternate materials such as recycled tires, recycled glass and waste plastics in road construction and delineate their economic and environmental importance. This is addressed by comparing various parameters such as global warming potential, carbon footprint, cost, and other environmental impact factors. The results of this investigation showed that the use of these materials in pavement construction has substantial environmental and economic benefits. These results will assist in developing revised pavement design and construction methods that are more efficient and economically feasible.