This persnickety number determines the strength of magnetic fields. It figures in everything from motors and generators to audio speakers. Oh, and without it we’d live in eternal darkness.

The explosion of digital data around the world is driving up energy demands at an astonishing pace. Within just a few decades ...

Nuclear fusion promises a green and infinitely renewable supply of energy—if we can harness it. Fusion happens all the time ...

Ultra-high energy cosmic rays, which emerge in extreme astrophysical environments—like the roiling environments near black ...

Transistors, the building blocks of modern electronics, are typically made of silicon. Because it's a semiconductor, this material can control the flow of electricity in a circuit. But silicon has ...

"We didn't initially realize that Parker and Solar Orbiter were measuring the same thing at all — when we connected the two, that was a real eureka moment." When you purchase through links on our site ...