The Shanghai-based commercial fusion energy company Energy Singularity announced on June 19 that it has successfully built the world’s first fusion reactor that puts out more energy than it takes in to run it, The Global Times reported. Energy Singularity’s technology is based on a high-temperature superconducting tokamak device, Honghuang 70 (HH70). A tokamak is a machine that confines a plasma using magnetic fields in a doughnut shape that scientists call a torus. Fusion energy scientists believe that tokamaks are the leading plasma confinement concept for future fusion power plants. And Ene…