Grumpy Old Geeks Topics Clean energy Topic Clean energy 4 mentions in 1 episode The hosts discuss smaller nuclear reactors, geothermal drilling techniques and fusion ignition. Mentions 582: Kind Of Dec 17, 2022 7:21 new toys for the green energy revolution. 8:11 geothermal energy, which means drilling deep into the ground to use the Earth's heat for power. 8:53 we also had the big fusion ignition story that came out this week 9:13 if you don't count all the 192 lasers and the power required for that.