The difference between renewable and fossil fuels lies in their sustainability and sources. Renewable fuels, derived from natural processes that are replenished continuously, include solar, wind, hydroelectric, and biomass sources. They typically have lower environmental impacts and contribute to reducing greenhouse gas emissions. In contrast, fossil fuels, such as coal, oil, and natural gas, are non-renewable resources formed over millions of years from ancient organic materials. Their extraction and combustion lead to significant carbon emissions, contributing to climate change and ecological degradation, highlighting the need for a transition to cleaner energy sources.