William Le Baron Jenney, the architect who constructed the world's first iron-and-steel-framed building in the 1880s, set up shop in Chicago, training a crop of architects that pushed the city skyward through internal frames.

BBC: The infamous architecture of Chicago

EU. For him, the Union is fundamentally an old-world structure originating in old industries (coal, iron, steel and food) and old ideas involving huge regulatory institutions.

ECONOMIST: Europe and America

The World Steel Association, a steelmakers' group, predicted early this month that the iron-ore market should stay balanced this year before moving into progressive surplus between 2014 and 2017 as new mine capacity comes on stream.

WSJ: Court Eases Mining Ban in Karnataka

Annual iron ore contracts are currently being negotiated with suppliers, and China is the world's biggest steel consumer.

FORBES: Magazine Article

By means of steel cables and iron brackets anchored into rock faces, climbers reach a high-altitude world that would otherwise be seen only by hardened alpinists.

BBC: Ten weekends in Europe's great outdoors

Upstream producers such as Brazil's Companhia Vale do Rio Doce (CVRD), the world's largest producer of iron ore and pellets, are trying to get into the business of making quality steel.

ECONOMIST: On a roll | The