It’s hard to believe, but the inventors of some of the 10 simple inventions that made millions were nothing more than dreamers not long ago. They had an elementary idea that they imagined could make ...

Author of “Gadget Nation” Steve Greenberg shares mom-and-pop inventions, such as The Airhook used to ease airplane travel, the Lotus Trolley Bag for an eco-friendly alternative to plastic shopping ...

Before the invention of transistors, vacuum tubes ruled the world. The only way to get amplification or switching (or any electrical control of current) back then was to use tubes. But some tube ...