This highlights the risk of ordinary geothermal, which extracts heat energy by changing the structure of the underlying earth, making it potentially unstable. Like fracking, it is now well known to cause earthquakes [0]. It could be useful for siphoning heat in volcanically active zones, but I wish the risks elsewhere were better known. Fracking has caused widespread structural damage from seismic activity in areas that were previously quiet and we should not see that mistake repeated.

[0] https://news.stanford.edu/2019/05/23/lessons-south-korea-sol...