Here’s what you’ll learn when you read this story: The Inca quipu was a complex system of knotted cords, encoded numerical records and possibly even a full logosyllabic language. New research ...

The Space Race gets most of the attention, but the 1960s quietly produced technology that shaped the modern world in ways ...

Here’s what you’ll learn when you read this story: The Inca never built a world of silicon chips or copper-wired circuits, and the high-speed hardware of modern times was something they simply didn’t ...