Wheels are the archetype of a primitive, caveman-level technology. But in fact, they're so ingenious that it wasn't until 3500 B.C. that someone invented them. By that time — it was the Bronze ...

Wheels are the archetype of a primitive, caveman-level technology. But in fact, they're so ingenious that it took until 3500 B.C. for someone to invent them. By that time — it was the Bronze Age ...

But it was the “revolving wheel, 250 feet in diameter and capable of carrying 2,160 persons per trip,” invented by George Washington Gale Ferris, Jr. and unveiled at Chicago’s World ...