<human>:  What are the advantages and disadvantages of nuclear energy?
<bot>: Advantages of nuclear energy: 
1. It is a largely emissions-free source of energy, producing significantly lower amounts of greenhouse gases than fossil fuels.
2. Nuclear energy is abundant. The potential for nuclear energy is enormous, as there is an almost limitless supply of uranium fuel.
3. Nuclear energy is reliable. Nuclear reactors are designed to operate day and night, and they can operate at full capacity almost 90% of the time. Disadvantages of nuclear energy:
1. Nuclear energy is expensive compared to other forms of energy due to the safety and security measures required.
2. Nuclear waste disposal is a major challenge, as radioactive materials can remain hazardous to humans and the environment for thousands of years.
3. Accidents at nuclear power plants can have catastrophic consequences, releasing large amounts of radiation into the environment.