In the chaos of World War II, one secret invention revolutionized warfare—the VT (Variable Time) fuze. This groundbreaking ...

They were quiet. Planes were a very new invention, they were rare and fragile. But when World War One started they became weapons. Pilots could spy on enemy targets and the first bombs were ...

After his death, Eli Whitney was described as "one of the most distinguished men who our country as produced." ...

Sharon Weinberger, the author of the book "The Imagineers of War," describes a few of these inventions that you might not have been aware of, like the Roomba. Follow Tech Insider: On Facebook ...