How Does the Quantum World Cross Over?
The universe according to quantum mechanics is strange and probabilistic, but our everyday reality seems nailed down. New experiments aim to probe where—and why—one realm passes into the other

Most of Simon Gröblacher's handiwork is invisible to the naked eye. One of the mechanical devices he fashioned in his laboratory at Delft University of Technology in the Netherlands is just a few millionths of a meter long—not much bigger than a bacterium—and 250 nanometers thick—about a thousandth of the thickness of a sheet of paper. Gröblacher no doubt could continue to shrink his designs, but he has a different goal: he wants to scale things up, not down. Click here to read more....