Final answer:
Two major problems faced with nuclear reactors are radioactive waste production and the potential for accidents and meltdowns.
Step-by-step explanation:
Two major problems we face with nuclear reactors are:
- The production of radioactive waste: Nuclear power plants produce radioactive waste that remains dangerous for thousands of years. This waste includes uranium mill tailings, spent reactor fuel, and other radioactive materials. Proper disposal and storage of this waste is a significant challenge.
- The potential for accidents and meltdowns: Although nuclear reactors are designed with safety mechanisms, accidents can still occur. The Fu`kushima and Chernobyl disasters demonstrated the devastating consequences of nuclear accidents, including the release of radioactive materials into the environment.