What are the examples from nature we can use by storage of radioactive waste ? How can we say that it will be under the ground with little danger for the environment or people for more than 5000...

What are the examples from nature we can use by storage of radioactive waste ? 

How can we say that it will be under the ground with little danger for the environment or people for more than 5000 years or 1 million years?   

Asked on by matej111

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bandmanjoe | Middle School Teacher | (Level 2) Senior Educator

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There are existing levels of low-level radiation that occur naturally in nature, such as coal, oil, and natural gas.  All these resources come from underground, so storage underground seems to be a pretty safe storage facility, since the surface and surrounding environment on top of these natural resources manage to do well.  There are different levels of radiation, ranging from high-level radiation, to medium-level, and finally, the aforementioned low-level radiation.  The more radiation a source gives off, the shorter the half-life, which is the amount of time it takes for half the source to decay into a stable form, that emits no radiation.  As is the case with radiation levels, the shorter the half-life, the faster the source loses its radiation danger.   Some sources have half-lives of thousands of years, so they must be maintained over a long period of time to prevent radiation poisioning of the environment.

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