Introduction Every household generates a large amount of biodegradable waste every day - vegetable peels, fruit rinds, leftover food, dry leaves, and garden waste. Usually, this waste is thrown into dustbins and sent to landfills, where it decomposes slowly and releases harmful gases like methane. However, this waste can become a valuable resource if converted into compost a nutrient-rich natural fertilizer that improves soil health and helps plants grow. Composting is a natural biological process in which microorganisms such as bacteria and fungi break down organic matter into humus-like material. For this, you don't need big equipment, it can be done in simple ways using pits, bins, or even plastic bottles. Composting reduces waste going to landfills, enriches soil, saves money on chemical fertilizers, and supports environmental sustainability. Objective To study and demonstrate how biodegradable household waste can be recycled into compost for sustainable use and conservation of soil and the ecosystem. Methodology Collect information about types of biodegradable waste generated in homes and schools. Identify suitable methods for home composting pit composting, bin composting, or bottle composting. Collect and record data on temperature, moisture, and time taken for complete composting. Study the role of earthworms, microbes, and aeration in the composting process. Compare the compost quality with chemical fertilizers by using both on potted plants and observing plant growth. Document the cost, energy efficiency, and environmental benefits of composting as compared to waste disposal. Expected Outcome Successful production of compost from kitchen and garden waste. Better understanding of waste segregation and recycling at source. Demonstration of how biodegradable waste can be transformed into valuable organic manure. Awareness among students and families about composting as a simple method of waste management. Appreciation for the waste-to-wealth approach This project helps students to see waste as a resource rather than a problem. By practicing composting, they learn the importance of Reduce, Reuse, Retrieve, Redesign, and Recycle (R5) in everyday life. Composting supports sustainable living, prevents pollution, and promotes a Lifestyle for Environment and Sustainability. Through this activity, young scientists become agents of change, showing how science and responsibility can work together to turn everyday waste into wealth- making homes, schools, and communities cleaner and greener. Source : Science and Innovation for Sustainability - Activity Guide Book 2026 & 2027