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No new coal deposits are currently under formation. One possible explanation for this is the evolution of a fungus responsible for digesting cellulose. Another is that coal formation is an extremely slow and gradual process, occurring over hundreds of thousands of years.

The rate at which we are burning coal vastly exceeds the rate at which any new deposits could possibly form. Therefore the activity is not sustainable. However, we do have sufficient coal deposits to continue burning this resource at present rates of consumption for centuries to come. The wisdom of doing this, however, in light of the increasing abundance of resultant heat trapping carbon dioxide, remains highly questionable.

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11y ago
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Q: Why is burning coal not sustainable?
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