Space Elevator

Putting physics aside the toughest challenge in building a space elevator has been finding a super-strong cable material. That's what has kept this idea in science fiction for 40 years. But the right stuff in terms of cable material is no longer thought of as "unobtainium". The answer is carbon-nanotube-composite ribbon. Small fibers of the material are set down side-by-side, then interconnected to form a growing ribbon. I want clothing made of this stuff. It would make the ultimate shield.