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 ...

The creative minds at Mintpass have taken applications we're all pretty familiar with and brought us ideas that make the TUAW bloggers drool. Recently, they created Mint Calculator #4; a concept that ...