As rural masses migrate to urban areas, populations grow, and people work toward better living standards, global food system sustainability is jeopardized, according to a new analysis spanning low- to high-income countries. The study, which was published April 3 in the scientific journal PLOS ONE, shows that only one major global driver—the increase in international trade flows—appears to have a net positive effect on global food systems sustainability. All other major drivers (population growth, urbanization, lifestyle change, and changes in land use) seem to have negative effects.