Food Security

Introduction: Land Conversion in the Doughnut Land conversion involves both the legal and physical alteration of land from one category to another, carrying significant implications for social well-being and environmental sustainability12. This process typically necessitates regulatory approval, particularly when agricultural land is repurposed for residential, commercial, or industrial uses12. Within the Doughnut Economics framework, land conversion serves as a crucial factor that can either foster sustainable development or drive societies beyond ecological boundaries, contingent upon its management34. ...

The Evolving Story of Freshwater Thinking The recognition of freshwater as a finite and vulnerable resource with planetary boundaries has evolved significantly over recent decades. Historically, water was primarily viewed through a resource extraction lens, with little consideration for sustainability limits or equitable access. The emergence of environmental consciousness in the 1960s and 1970s began shifting this perspective, highlighting connections between water quality, ecosystem health, and human wellbeing. ...

Ecological Impacts of Nitrogen and Phosphorus Runoff Eutrophication and Aquatic Dead Zones Excess nitrogen and phosphorus from fertilizers enter waterways through surface runoff and leaching, triggering eutrophication—a process where algal blooms deplete dissolved oxygen, creating hypoxic “dead zones” incapable of supporting marine life12. The scale of this crisis is particularly evident in the Gulf of Mexico, where a massive 6,334-square-mile dead zone persists due to Midwestern agricultural runoff. This environmental catastrophe has decimated local fishing industries, reducing shrimp catches by 40% and destabilizing coastal economies that have relied on these waters for generations34. ...

To truly understand the complexities of ocean acidification, it’s essential to delve into its underlying chemical mechanisms. When seawater absorbs atmospheric CO2, a gas that is being emitted at alarming rates due to human activities, it triggers a cascade of chemical reactions that ultimately increase hydrogen ion concentration and subsequently lower the water’s pH, making it more acidic.12 This intricate chemical process simultaneously reduces carbonate ion availability, a critical building block. This reduction proves particularly devastating for shell-building organisms such as oysters, clams, and mussels, which rely on these carbonate ions for survival and the development of their protective shells.34 ...

Introduction Food security is a fundamental requirement for human well-being and societal stability. The 1996 World Food Summit defined it as the state where “all people, at all times, have physical and economic access to sufficient, safe and nutritious food to meet their dietary needs and food preferences for an active and healthy life”.1 This definition underscores the importance of not just having enough food, but also having access to the right kinds of food to support health and well-being. Indeed, food and nutrition security are indispensable for both physical and mental well-being, playing a crucial role in overall human development.2 Furthermore, food security is intricately linked to social stability, as its absence can exacerbate social unrest and conflict.3 ...