Sometimes, this infernal ache in the lower left of my back spreads beyond that area, into the sciatic nerve. That sharp electric pain then fires down my buttock and into the front of my thighs.

Even once researchers can reliably get more power out of a fusion reaction than they put in, they'll still need to overcome engineering challenges to scale up fusion energy. The experiment ...

George R. Tynan has received research funding from the US Department of Energy and the Office of Fusion Energy Sciences, and has served on numerous advisory panels to DOE and the International ...