Sustainability, at its core, involves meeting current needs without compromising the ability of future generations to meet their own, encompassing environmental, social, and economic dimensions. It's about responsible resource management and creating a balanced, equitable, and resilient future for all. 

Here's a more detailed explanation:

Definition:

Sustainability, as defined by the Brundtland Report, is "development that meets the needs of the present without compromising the ability of future generations to meet their own needs". 

Three Pillars:

Sustainability is often described as having three interconnected pillars:

Environmental Sustainability: This focuses on preserving natural resources and ecosystems, ensuring they can continue to provide for current and future needs. 

Social Sustainability: This emphasizes ensuring equitable access to resources and opportunities, promoting human well-being, and addressing social inequalities. 

Economic Sustainability: This involves creating and maintaining economic systems that are resilient, efficient, and fair, ensuring long-term economic stability. 

Importance:

Sustainability is crucial for several reasons:

Protecting the Planet: It helps mitigate environmental degradation, climate change, and resource depletion, ensuring a healthy planet for future generations. 

Promoting Social Equity: It addresses social inequalities, ensuring that everyone has access to basic needs and opportunities, fostering a more just and inclusive society. 

Ensuring Long-Term Economic Stability: It promotes sustainable economic growth that is not reliant on unsustainable practices, ensuring long-term economic viability. 

Examples of Sustainable Practices:

Environmental: Using renewable energy sources, reducing carbon emissions, promoting waste reduction and recycling, and protecting biodiversity. 

Social: Ensuring access to education, healthcare, and employment opportunities for all, promoting social justice and equality. 

Economic: Investing in sustainable infrastructure, promoting circular economy models, and supporting fair trade practices.