The Future of Water Security in a Changing Climate

Historical Evolution of Water Security Understanding The understanding of water security has evolved significantly over time, particularly in conjunction with the growing awareness of climate change. Historically, water management often focused on ensuring supply for specific sectors like agriculture or urban consumption, often through large-scale infrastructure projects such as dams and irrigation systems1. However, the late 20th and early 21st centuries saw a broadening of the concept of “water security” to encompass not just quantity but also quality, ecosystem health, and the equitable distribution of water resources23. ...

July 12, 2025 · 9 min · 1770 words · doughnut_eco

How Fish Adapt to Ocean Acidification

A Planetary Problem with a Social Toll Ocean acidification, driven by anthropogenic carbon dioxide emissions, represents a critical planetary boundary within Kate Raworth’s Doughnut Economics framework, directly linking climate change impacts to marine ecosystem health and human food security. As atmospheric CO₂ levels have risen from pre-industrial concentrations of 280 µatm to current levels exceeding 414 µatm, the ocean’s absorption of this excess carbon has fundamentally altered seawater chemistry1. This process has decreased ocean pH by approximately 0.1 units since the Industrial Revolution, with projections indicating further declines to pH 7.8 by 2100 and potentially as low as 7.45 by 23002. The concept of fish adaptation to ocean acidification sits at the intersection of planetary health and social foundations, as marine fisheries provide essential protein sources for over 3 billion people globally while supporting the livelihoods of millions in coastal communities. ...

June 14, 2025 · 13 min · 2597 words · doughnut_eco

The Impact of Social Capital on Mental Health

Social Capital and Mental Wellbeing in a Sustainable World Social capital represents a critical element within the social foundation of the Doughnut Economics framework that plays a vital role in shaping mental health outcomes. Networks, relationships, trust, and social cohesion that exist within communities have emerged as significant determinants of mental health across various populations and contexts12. The concept encompasses both cognitive elements (perceptions of trust and reciprocity) and structural components (social participation and networks), with each contributing uniquely to mental wellbeing34. ...

June 6, 2025 · 14 min · 2910 words · doughnut_eco

The Wider Ripple Effects of Climate Change on Our Economy

Climate’s Deepening Imprint on Global Income and Work The global economy stands at a critical juncture as climate change increasingly disrupts established economic systems and transforms working conditions worldwide. Income and Work represent a key dimension of the social foundation within the Doughnut Economics framework, as climate driven changes reshape labor markets, productivity, and economic output globally. ...

May 13, 2025 · 16 min · 3408 words · doughnut_eco

Ozone Depletion Explained: From CFCs to Global Solution

Understanding Stratospheric Ozone and Its Vulnerability The stratospheric ozone layer, situated approximately 12 to 30 miles above Earth’s surface, plays a crucial protective role by absorbing harmful ultraviolet (UV) radiation from the sun12. This atmospheric shield prevents dangerous levels of UV radiation from reaching Earth’s surface, where it would otherwise cause significant harm to humans, wildlife, and ecosystems34. Under natural conditions, ozone ($O_3$) undergoes a continuous cycle of formation and breakdown, maintaining a dynamic equilibrium. In this cycle, ozone absorbs UV radiation and breaks down ($O_3$ + UV light $\rightarrow$ O + $O_2$), but the resulting oxygen atoms can recombine to reform ozone, thus preserving the protective layer while absorbing harmful radiation56. This delicate balance, dependent on complex atmospheric chemistry, evolved over billions of years, creating conditions conducive to life on Earth’s surface42. ...

May 7, 2025 · 11 min · 2287 words · doughnut_eco