Sometimes when an innovative technology is introduced, its potential impact isn’t initially recognized. Take 3-D printing, which has been around since the 1980s. It was originally dismissed as a niche ...

Mechanical engineers Shervin Foroughi and Mohsen Habibi were painstakingly maneuvering a tiny ultrasound wand over a pool of liquid when they first saw an icicle shape emerge and solidify. The pair ...