> “Digging 10 miles underground” is like “building a solar panel the size of California” — really useful if you can find a feasible way to do it Kola already

> “Digging 10 miles underground” is like “building a solar panel the size of California” — really useful if you can find a feasible way to do it Kola already reached 76% of the way there. https://en.wikipedia.org/wiki/Kola_Superdeep_Borehole https://en.wikipedia.org/wiki/Kola_Superdeep_Borehole