In recent years, they’ve found that 2D crystals — flat lattices of atoms in which electrons can move in two directions — host a wild variety of quantum behaviors. Let’s see why the map of a 2D crystal ...

In “Circles in the Sky,” Cornish, Spergel and Starkman explained how cosmological data might reveal that our universe has topology like that of a 3D torus (one of many shapes they considered). They ...

Fed Chair Powell Says the US Economy Is in 'Solid Shape' With Gradual Rate Cuts Coming WASHINGTON (AP) — Federal Reserve Chair Jerome Powell signaled Monday that more interest rate cuts are in ...