http://www.smh.com.au/news/specials/...935641851.html
The lift's carriages, which will themselves require new feats of engineering, would move up and down 35,000 kilometre-long cables...
Professor Yoshio Aoki, a director of the space elevator association and a professor of precision machinery engineering at Nihon University, said the cables would need to be 180 times stronger than steel...