For more than half a century, a Massachusetts company has had a global impact on how things are made. Whether it's medical equipment or space telescopes or even computer chips, without this North ...

Gears have one large downside: They have to make physical contact, meaning over time they wear down and eventually break. These liquid gears may change that.

HALT. DOUG MEEHAN TONIGHT HAS MORE IN MADE A MESS. WHAT YOU’RE LOOKING AT IS NOT YOUR NORMAL COG AND WHEEL GEAR SYSTEM, WHERE A REGULAR GEAR ROLLS IN THIS REVOLUTIONARY CONFIGURATION, THE GEAR TEETH ...