Facing the escalating threat of climate change, marked by shifts in weather patterns and exacerbated by human activities, agriculture encounters unprecedented challenges, posing a substantial risk to global food security. The chapter commences with a thorough exploration of the concept of climate stress, followed by a discussion on traditional approaches to mitigating this stress. The rise in atmospheric CO2 concentration and its greenhouse effects undergo examination, underscoring the pressing need to address these environmental transformations. Centering on specific challenges emanating from abiotic stressors such as drought, waterlogging, temperature extremes, and salinity, the chapter scrutinizes their impact on agricultural yields and productivity. It emphasizes the imperative shift towards climate-smart crops and delves into the paradigm shift in research and breeding methodologies, aiming to enhance plant resilience while minimizing resource consumption. A critical analysis of current agricultural practices unveils sustainability issues, prompting a discourse on innovative breeding techniques, precision agriculture, and digital applications bolstered by artificial intelligence. These technological advances present promising solutions to mitigate the effects of climate stress, enhance resource efficiency, and ensure resilient agricultural yields under diverse climatic conditions. The chapter underscores the urgent need for transformative measures to counter the projected decline in agricultural production due to climate change. It advocates for a comprehensive global strategy integrating smart water and nutrient management practices, biotechnology, genetic engineering, and climate-smart agriculture. The collaborative adoption of these approaches is crucial for establishing a sustainable and equitable food security system capable of meeting the challenges of the twenty-first century.