Sustainable agriculture is essential for meeting global food demands while preserving natural resources for future generations. The 21st century has introduced numerous innovations aimed at enhancing productivity, minimizing environmental impact, and promoting resilience against climate change. Key advancements include precision farming, genetically modified organisms (GMOs), organic farming, agroforestry, and water conservation techniques. However, challenges such as soil degradation, water scarcity, policy constraints, and socioeconomic barriers continue to hinder widespread adoption. This paper explores the latest innovations in sustainable agriculture, evaluates their impact, and examines the challenges that must be addressed to ensure food security and environmental sustainability.