“Does anyone remember what this is called?” Music instructor Amy Thomas pointed to a whiteboard where she had just drawn a solid black circle with a long stem pointing up. “A quarter note!” the ...

Dr. Phillips-Fein is a professor of history at Columbia University. “All you had to do was pay us enough to live.” The young man’s voice in the video is earnest and clear, forceful but controlled. His ...

We may earn commission from links on this page, but we only recommend products we love. Promise. Whether you see the invisible string theory as a comforting metaphor, a spiritual belief, or just a fun ...

Using a “bootstrap” approach, researchers show that a small set of assumptions may naturally lead to a string-theory description of certain high-energy processes. Figure 1: “Pulling oneself up by the ...

String theory attempts to unify general relativity and quantum theory. Popular in the 1990s, string theory fell out of favor as it failed to provide testable predictions and required ten dimensions ...