A study in fruit flies reveals how the brain's compass and steering regions make course corrections. Our sense of direction is essential to our ability to navigate the world around us. It acts as the ...

Several years ago one of us, Toni, asked another of us, Marco, to come to his office at the Institute of Photonic Sciences, a large research center in Castelldefels near Barcelona. “There is a problem ...

A century ago, the strange behavior of atoms and elementary particles led physicists to formulate a new theory of nature. That theory, quantum mechanics, found immediate success, proving its worth ...