Natufian spindle whorls from 12,000 years ago represent the earliest fast-spinning technology in the Levant, shedding light ...

drop spindles work on the same mechanical principle as the earliest wheels, which show up on carts around 6,000 years ago during the Bronze Age. “Circular objects with a hollowed center ...

The 260-day calendar, called a tzolkin, consists of two wheels, a larger one of twenty days and a smaller one with the numbers ... Each of the twenty days was associated with tangible objects or ...