To test their algorithm, the researchers designed and built a system of “smart pebbles”–cubes about 10 millimeters to an edge, with processors and magnets built in. [Photo: M. Scott Brauer via MIT ...

Two MIT researchers are working on creating "smart sand," a system in which people can bury a small object, then, moments later, pull out a 3D duplicate of that object, created out of the particles.

When you need to make copies of a text object in an Adobe Illustrator document, the program offers multiple methods through which to create your duplicates. Which method you select depends on whether ...