Sustainability means using resources in a way that meets our needs today without harming the ability of future generations to meet their own needs. It includes protecting the environment, saving natural resources, and reducing pollution. Simple actions like saving water, planting trees, recycling waste, and using renewable energy can make a big difference. Sustainability also focuses on balancing economic growth with environmental care and social well-being. By making responsible choices in our daily lives, we can help create a cleaner, healthier, and more sustainable world for everyone.