Nuclear power generation is

• A. Nonrenewable and cleaner energy that does not release pollutants but releases thermal pollution and hazardous solid waste
• B. Renewable energy
• C. A fossil fuel alternative with no waste
• D. Inexhaustible energy source

Answer: (A)

Nuclear power sits at the intersection of nonrenewable fuel use and low air pollution. The fuel—uranium—is finite and not replenished on human timescales, so it’s nonrenewable. It doesn’t burn fuels that emit air pollutants, so it’s cleaner in terms of air quality compared with fossil-fuel plants. But it still produces waste: spent nuclear fuel and other radioactive materials that require secure, long-term containment, and the cooling systems release lots of heat into nearby water bodies, causing thermal pollution. Those wastes and heat discharges are the environmentally relevant downsides, even though there aren’t large air emissions during normal operation. The other statements mischaracterize nuclear power: it’s not renewable, not inexhaustible, and it does involve waste.