The short answer is there's nothing humanity can do in the medium term - short of a breakthrough in physics - that could affect the earth's core. A quick check

The short answer is there's nothing humanity can do in the medium term - short of a breakthrough in physics - that could affect the earth's core. A quick check of Wikipedia gives this link: https://en.wikipedia.org/wiki/Geothermal_energy#Renewability_and_sustainability https://en.wikipedia.org/wiki/Geothermal_energy#Renewability... TLDR: The earth's core contains enough energy that (if 100% extracted) could power modern-day civilisation for 100 billion years. If we increased global power production 10 times and extracted all that from the core it would not have an effect before the sun dies in approximately 5 billion years time.