Biochar is a carbon-rich, porous material produced through the pyrolysis of biomass under limited oxygen conditions. It offers a sustainable solution for converting agricultural residues and organic wastes into valuable resources while reducing environmental pollution caused by residue burning. Due to its high surface area, porosity, and stable carbon structure, biochar improves soil physical, chemical, and biological properties by enhancing water retention, nutrient availability, soil aeration, and microbial activity. Its application has been shown to increase fertilizer use efficiency, improve crop productivity, and enhance soil fertility, particularly in degraded and infertile soils. Biochar also plays a significant role in environmental remediation by adsorbing pollutants and heavy metals. Furthermore, it serves as an effective carbon sequestration tool, reducing greenhouse gas emissions and contributing to climate change mitigation. Owing to its multiple agronomic and environmental benefits, biochar is increasingly recognized as a key component of sustainable and climate-resilient agriculture.