Comment: To be honest, I haven't looked into it that much...

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In reply to comment: I think the question was (see in situ)

To be honest, I haven't looked into it that much...

I have heard that they aren't what they say they are. And that they regenerate so we will never run out. other than that I'm not sure what you're talking about.

does this change the number of people who die breathing in pollution created by burning them?