The Incredible Story of the Masterfully Engineered Curta Calculator, First-Ever to Fit in Your Pocket
The Curta mechanical calculator could fit in your pocket with ease.
Coaxial rotor designs have been used on military helicopters for the better part of the last 75 years.
Air conditioning was initially invented to improve the efficiency of paper manufacturing.
Microsoft's end of support for Windows 7 means millions of vulnerable PCs are out there now.