Hang on just one second," Michael Norris says as he steps outside on break from one of two day jobs. It's 12:10 p.m. on a Monday in late April, and he has agreed to a phone interview to talk about his ...

Mix a designer magnetic powder into oil, water, or glycol, and what do you get? A fast-acting mechatronic fluid perfect for damping or moving variable loads. Jacob Rabinow of the U.S. National Bureau ...