The food system is fundamental for human life. It provides energy, nutrition, an income source for billions of people, and is the largest user of the world's natural resources. In response, improvements in agriculture operations have to be made at both the policy and individual farmer level in...

Transportation services and infrastructure connect people, businesses, and places. They allow citizens to access opportunities, such as jobs, education, health services, recreation, and enable the movement and distribution of goods. As a result, transport services and infrastructure are key to...

"Past research into the determinants of international trade highlighted the importance of the basic spatial gravity model augmented by additional variables representing sources of friction. Studies modeled many sources of friction using various proxies, including indices based on expert judgment...