Check out this cool green gadget, the water powered calculator. Plain tap water powers this unique, H20 desk calculator! Add a few drops of water to the removable battery and insert it in the ...

While most people are satisfied with a calculator application on their smartphone these days, there’s still something to be said for the old fashioned desk calculator. Maybe it’s the fact the ...

Forbes contributors publish independent expert analyses and insights. Technology journalist specializing in audio, computing and Apple Macs. This article is more than 4 years old. The Blossom White ...