The invention of the wheel has long been considered a major ... The first examples of wheels currently date to at around 4000BC in Mesopotamia – modern-day Iraq – when the wheel shape was ...

Mankind has traveled on wheels for at least 5,000.years ... casts doubt on the accepted hypothesis that vehicles were invented in Mesopotamia ...

It has been a pleasure in past columns to share my opinion of the two greatest inventions of all time: sticky notes and wheels on suitcases.