the.com/nuclear
The universe's loophole: split or fuse a speck of matter, unleash a city's worth of power.
means Relating to the nucleus of an atom, especially the staggering energy released when it splits or fuses.
from From Latin nucleus, the kernel of a nut — physicists borrowed the word for the atom's tiny dense core, then for the bombs and reactors built around it.
E equals mc squaredA gram of matter equals 21 kilotons of TNT.
Sun's day jobFusion, not fire, powers every sunrise.
Stubborn vowelOften mispronounced nucular, even by presidents.