"CO2-powered" refers to technologies or systems that utilize carbon dioxide (CO2) as a source of energy or as a driving force for various processes. This concept is often explored in the context of reducing greenhouse gas emissions and finding sustainable energy solutions. For example, some innovative machines can harness the energy from CO2 to perform tasks, making them more environmentally friendly. One exciting application of CO2-powered technology is in the field of renewable energy. Researchers are developing methods to convert CO2 into useful fuels or chemicals, which can help mitigate climate change. By transforming waste CO2 into valuable resources, we can create a more sustainable future while reducing our carbon footprint.