ELI5: Explain Like I'm 5

Used nuclear fuel

Okay kiddo, so you know how we use special rocks called uranium to make electricity in power plants? Well, after we use the uranium to make electricity, there is still some uranium leftover that we can't use anymore. This leftover uranium is called used nuclear fuel.

Now, used nuclear fuel can be really dangerous and harmful to people and the environment if we don't take care of it properly. So, what do we do with it? We store it in special containers called "spent fuel pools" or "dry casks". These containers are designed to keep the used nuclear fuel safe and secure, so it can't hurt anyone or anything.

But we don't just store the used nuclear fuel forever. Scientists are working on ways to recycle the used fuel, so we can use it again to make even more electricity. This is called "nuclear recycling". Scientists can take the leftover uranium in the used fuel and turn it into a different type of uranium that can be used in power plants again. This helps us use our resources more efficiently and reduce waste.

So, that's the basic idea. We use uranium to make electricity, there is some leftover uranium called used nuclear fuel, we store it in special containers to keep it safe, and scientists are working on ways to recycle it so we can use it again to make even more electricity.
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