Quaise plans to use fusion technology to drill the deepest holes in history, unlocking clean, virtually limitless, geothermal energy to re-power fossil-fueled power plants all over the world.

Everyone knows the Earth’s core is hot, but maybe the scale of it still has the power to surprise. Temperatures in the iron center of the core are estimated to be around 5,200 °C (9,392 °F), generated by heat from radioactive elements decaying combining with heat that still remains from the very formation of the planet – an event of cataclysmic violence when a swirling cloud of gas and dust was crushed into a ball by its own gravity.

Where there’s access to heat, there’s harvestable geothermal energy. And there’s so much heat below the Earth’s surface, according to Paul Woskov, a senior fusion research engineer at MIT, that tapping just 0.1 percent of it could supply the entire world’s energy needs for more than 20 million years.

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