Every now and again I search for Topher just to see how The Others are doing these days. Today I searched for Topher on YouTube. Amongst the expected, the boring, and the truly disturbing, I found this.
This is an absolutely brilliant way to store excess energy from renewable sources. https://hardware.slashdot.org/story/19/12/07/0139213/scientists-propose-using-mountains-to-build-a-new-type-of-battery-for-long-term-energy-storage