Form is temporary, function is permanent. The most important inventions are the ones that relate to the human condition, and they crop up over and over again. Below, Houston shares five key insights ...

Anyone who’s taken classes in geometry, algebra, trigonometry or other advanced math forms has certainly encountered the graphing calculator before. These multi-function devices make incredibly ...

They can do everything from plot complex equations to even play games like Doom (if you have enough rotting potatoes) but the handheld calculator started out as a very simple device capable of ...