The Economist

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Doughnuts, Apples, Smoke Rings and Shrimps

After decades spent within the purview of governments, fusion energy is attracting private-sector interest.

Fusion energy is a proposed method of creating electricity through fusing together hydrogen isotopes, Deuterium and Tritium, inside a reactor. One such reactor is a Tokamak, and resembles a doughnut shape, other reactors are inspired by smoke rings and even pistol shrimp.