UN-SDG 13: Climate Action

A (Grim) History of Hollowing Out Our Home The understanding of biodiversity as a planetary boundary has developed considerably over recent decades. Scientists have progressively recognized that biological diversity represents not merely an environmental concern but a fundamental limit to human activities. This recognition began with the Stockholm Resilience Centre’s introduction of the planetary boundaries framework, which identified biodiversity (or biosphere integrity) as one of nine critical Earth system processes that maintain planetary stability1. ...

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. ...

Unmasking Maritime Pollution’s Depths The global shipping industry, while vital for international trade and economic growth, significantly contributes to chemical pollution in our oceans and atmosphere. This pollution extends far beyond the visible oil spills that often capture headlines. It encompasses a complex mixture of air pollutants, greenhouse gases, and water contaminants, with far-reaching consequences for both environmental and human health. ...

Health Equity: A Foundation for Sustainable Societies Health equity is both a moral imperative and a practical necessity for sustainable human development. It refers to the absence of avoidable or remediable differences in health among groups of people, regardless of their social, economic, demographic, or geographic background1. The global community has recognized this by incorporating it into the United Nations’ Sustainable Development Goals, particularly SDG 3: Good Health and Well-being, with universal health coverage as a crucial target2. ...

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 ...