Long-time Slashdot reader jenningsthecat shared this article from IEEE Spectrum:
By dropping a nuclear reactor 1.6 kilometers (1 mile) underground, Deep Fission aims to use the weight of a billion tons of rock and water as a natural containment system comparable to concrete domes and cooling towers. With the fission reaction occurring far below the surface, steam can safely circulate in a closed loop to generate power.
The California-based startup announced in October that…

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