Inventing the City March 2011 How High Can We Go? The ceaseless climb of the world's skyscrapers is a story of ever-evolving challenges. Here’s how we reached the heights we have—and where we might go from here. Alexis C. Madrigal Feb 9 2011, 9:30 AM ET Facebook Twitter LinkedIn Google+ Email Print Comments Graphic credit: Chris Philpot Alexis Madrigal is a senior editor at The Atlantic. A former staff writer for Wired.com, he's the author of the forthcoming history of clean energy in America, Powering the Dream.