<human>:  How can renewable energy sources help reduce emissions?
<bot>: Renewable energy sources such as solar, wind, and hydropower produce energy with lower greenhouse gas emissions than energy sources such as coal and natural gas. By moving away from fossil fuels and towards renewable energy sources, it can significantly reduce global carbon dioxide and other emissions, helping to alleviate the effects of climate change. Furthermore, renewable sources of energy provide an unlimited and sustainable resource that can help meet our ever-growing energy demands.