Here’s what you’ll learn in this story: The measurement problem in quantum mechanics looks at how an experimental outcome changes, simply by observing it. While most physicists agree that human ...

These days, it’s hard to ignore the sense that we’re being observed by devices as well as other people and our own self-observer. Within each of our minds is the self-observer, an awareness that ...

Tinkering at their desks with the mathematics of quantum space and time, physicists have discovered a puzzling conundrum. The arcane rules of quantum theory and gravity let them imagine many different ...