The definition and key aspects of sustainable development

Sustainable development refers to progress that satisfies the requirements of today's population without hindering future generations from fulfilling their own needs. This concept, outlined by the World Commission on Environment and Development in 1987, emphasises a careful balance to avoid long-term harm.

Core aspects of sustainable development

Sustainable development integrates three main pillars that must be balanced for overall success:

• Economic development - Focuses on growth and prosperity, such as increasing income and creating jobs, while ensuring resources are used efficiently.
• Social progress - Involves improving human well-being, including access to education, healthcare, and fair distribution of opportunities to reduce inequalities.
• Environmental protection - Ensures that natural resources are preserved and not depleted, preventing damage like pollution or habitat loss.

Additional principles of sustainable development

• Consideration for future generations - Current actions should not exhaust resources or cause environmental harm that limits options for those in the future.
• Preservation of resources - Natural assets must be managed so they remain accessible across generations, avoiding overuse or depletion.
• Meeting basic needs and reducing inequality - Efforts should address the essential requirements of all people today, tackling global disparities in income, wealth, basic social goods (such as health and education), and material goods (like food and shelter).
• Long-term stability - The ultimate aim is to achieve enduring equilibrium in the economy, society, and environment, where human advancement does not lead to ecological breakdown.

The Sustainable Development Goals (SDGs)

The Sustainable Development Goals (SDGs) consist of 17 interconnected targets established by the United Nations General Assembly in 2015, with a deadline of 2030. These goals expand on the earlier Millennium Development Goals (MDGs) by promoting prosperity alongside planetary protection, addressing economic, social, and environmental dimensions in a balanced manner.

Key features of the SDGs

• Universal application - The goals apply to all nations, regardless of wealth, encouraging sustainable living worldwide.
• Progress from MDGs - Building on the MDGs, the SDGs have accelerated improvements in poverty reduction, disease management, education access, and infrastructure in the world's poorest areas, particularly in Africa.

The 17 Sustainable Development Goals

1. No poverty
2. Zero hunger
3. Good health and well-being
4. Quality education
5. Gender equality
6. Clean water and sanitation
7. Affordable and clean energy
8. Decent work and economic growth
9. Industry, innovation and infrastructure
10. Reducing inequality
11. Sustainable cities and communities
12. Responsible consumption and production
13. Climate action
14. Life below water
15. Life on land
16. Peace, justice and strong institutions
17. Partnerships for the goals

How poverty contributes to environmental degradation

Poverty acts as a significant driver of environmental harm, as communities in extreme need often prioritise immediate survival over long-term sustainability. This creates a cycle where resource overuse damages the environment, further entrenching poverty for future generations.

Ways poverty leads to environmental degradation

• Overuse of land - In regions with limited access to advanced farming techniques, farmers may exhaust soil by continuously planting crops to boost short-term yields, leading to nutrient and moisture loss that lowers land quality and future productivity.
• High population pressures - Rapid population increases in poor areas heighten demands on resources, as more people compete for essentials like food and water, intensifying environmental strain.
• Deforestation - Forests are cleared for farmland, construction materials, or fuel, reducing biodiversity and contributing to soil erosion.
• Overgrazing and overfishing - Excessive use of pastures and water bodies depletes these resources, making them less viable over time.
• Impact on sustainability - These survival-driven actions erode the natural resource foundation, threatening the ability of future generations to meet their needs and perpetuating a cycle of degradation.

Key indicators of development

Development indicators provide measurable ways to assess progress in sustainable development, focusing on health, economic, and social factors. They help evaluate how well countries are advancing in human well-being and highlight correlations between income levels and quality of life.

Health-related development indicators

• Health expenditure per capita - Amount spent on healthcare per person, indicating investment in medical services.
• Life expectancy - Average number of years a person is expected to live, reflecting overall health standards.
• Infant mortality - Number of deaths of children under one year per 1,000 live births, showing healthcare effectiveness for newborns.
• Malnutrition prevalence - Proportion of the population suffering from inadequate nutrition, linked to food access.
• Maternal mortality ratio - Number of maternal deaths per 100,000 live births, highlighting risks during childbirth.
• Access to improved sanitation - Percentage of people with safe waste disposal facilities, affecting disease prevention.

Economic development indicators

Gross domestic product (GDP) or gross national income (GNI) per capita at purchasing power parity (PPP) offers insight into average income levels, adjusted for cost-of-living differences. Higher values often correlate with better well-being, though they provide only partial information on overall development.