If you’ve ever sat on a sofa, lounged in a recliner, or taken a seat on a bus, you’ve probably already interacted with polyurethane. It’s fair to say that nearly every mattress, pillow, cushion, pad, ...

Most people likely think of robots as complex electronic devices, made up of many parts that have to be assembled in factories. An experimental new non-electronic bot, however, can be 3D-printed all ...