The debate over whether nuclear energy is the best solution to climate change centers on its potential to provide large-scale, low-carbon electricity compared to other energy sources. Nuclear power generates electricity through fission—splitting atoms of uranium—without emitting carbon dioxide during operation, making it an attractive option for reducing greenhouse gas emissions. Historically, nuclear energy emerged in the mid-20th century as a promise of endless, clean power. However, incidents like Chernobyl (1986) and Fukushima (2011) raised public fears over safety, waste disposal, and long-term environmental risks. These concerns slowed expansion in many countries, though others—like France and South Korea—continued to rely heavily on nuclear power. In the context of climate change, nuclear energy is seen as a stable, high-output option that can complement intermittent renewables like solar and wind. Yet, issues like cost, construction time, waste storage, and geopolitical risks remain key challenges. Understanding this debate involves exploring energy policy, environmental science, and the balance between urgency and risk in global climate strategies.