Comment Should we aggressively pursue geothermal though? (Score 1) 584
There is approximately 13,000 ZJ worth of geothermal energy, and when that runs out what happens? On the other hand the earth get smacked with about 3,850 ZJ of energy per year from the sun.
Do we really want to extract all that geothermal energy from our core or do we want it to just let it slowly leak out the way it currently is? What are the ramifications of opening up bigger seams to get at that heat?
I understand it would take a long time to extract that heat, but it appears to be an irreversible process?