European researchers are developing quantum computers using light and glass, in a collaboration that promises breakthroughs in computing power, battery technology and scientific discovery. Subscribe ...

Plus: a mysterious disease has killed more than 50 people in Western Congo This is today's edition of The Download, our weekday newsletter that provides a daily dose of what's going on in the world of ...

Scientists have finally uncovered a quantum counterpart to Carnot’s famed second law, showing that entanglement—once thought stubbornly irreversible—can be shuffled back and forth without loss if you ...