Physics

Quantum computers have a fragility problem. The quantum states that give them their power are easily disturbed, and a stray bit of noise can scramble a calculation before it finishes. One of the most…

The place where most of Earth's surface is made lies kilometres underwater, in near-total darkness, along a seam that winds around the planet like the stitching on a baseball. Mid-ocean ridges are…

Set a bowling ball spinning in the middle of a trampoline and, in Einstein's universe, it does more than sag the surface — it twists it, winding the fabric around like a spoon in honey. General…