Why do we have e.g. nuclear waste, if mass can be converted to energy?

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My knowledge about school level physics is admittedly not that fleshed out, but we were told that it is possible to convert mass to energy. My google-fu has sadly left me for my question here 🙁

So why can’t we just take e.g. nuclear waste and convert it to energy? After that so is my understanding it wouldn’t simply exist as matter anymore and wouldn’t require to store dangerous trash if you can convert it all to energy.

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Anonymous 0 Comments

Lawn grass can be converted to calories (energy), but you probably don’t eat it. Why not? Your body can’t do the process to convert that type of chemical/plant into energy. You’d have to put it in a fire or feed it to a cow.

Same thing. Not all matter is in a form where we can convert it to energy. It can convert, we just can’t make it based on the process we have at our disposal and the state it’s in.

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