Spent fuel rods from US nuclear reactors are typically stored on-site in specially designed pools or dry cask storage systems. The long-term storage solution, however, is to transfer the fuel rods to a geological repository, such as the proposed Yucca Mountain repository in Nevada.
Yucca Mountain is a proposed repository site for storing high-level nuclear waste in the United States. The site was chosen for its geologic stability and isolation to prevent radiation from reaching the environment. If approved and constructed, Yucca Mountain would be used to store spent nuclear fuel and other radioactive waste generated by nuclear power plants.
Americium is extracted from spent nuclear fuels where is formed by nuclear reactions.
Well...I cannot say about how much has been the money spent on nuclear arms worldwide but nuclear weapons have cost the United States at least $5.48 trillion since 1940....!!
Irradiation of uranium in nuclear reactors, separation from the spent nuclear fuel, refining
Dumping nuclear spent fuel rods in the ocean is illegal and poses serious environmental risks. Radioactive materials from spent fuel rods can contaminate marine life, water, and the ecosystem. Safe and secure storage solutions are used to manage nuclear waste.
Spent nuclear fuel generates heat due to the radioactive decay of the leftover isotopes in the fuel rods. These isotopes emit radiation as they decay, which produces heat energy. The heat generated must be carefully managed to prevent overheating and ensure the safe storage of the spent nuclear fuel.
Thousands of years at least
It is highly radioactive (that is the waste contained in the spent fuel)
It will have very little effect. Any power station whether fossil fuel or nuclear rejects low quality heat to a cooling water source, lake, river, ocean, or the atmosphere via cooling towers, so nuclear can't be blamed for that. Other than that there is the question of nuclear waste, primarily the spent fuel. The problem here is finding a place to store it in perpetuity, or at least thousands of years. It should be possible to solve this problem with a depository at Yucca Mountain Nevada or some other place. In the meantime it is being safely stored on the power station sites.
16 trillion dollars
Spent nuclear fuel is typically stored on-site at nuclear power plants in steel and concrete containers called dry casks. Some countries have centralized storage facilities where spent fuel can be safely stored until a permanent disposal solution is developed. Long-term solutions may include deep geological repositories where the fuel is permanently isolated from the environment.