architecture critic paul kbober. often note forward their lightness and grarks his work includes the largest single building on the planet, the beijing airport the hurst airport here in new york. became the 21st prince of asturius award in 1999. this year he turned 75. a biography, "norman foster a life in architecture." there is a new documentary about his life in work. it is called, "how much does your building weigh, mr. foster?" here is a look at that documentary. >> if you look at how norman looks, always dressed in a very particular kind of style, it reflects the qualities of his architecture very much. it has that sense of doing things precisely, carefully, consideredly. but you could also say that there's something about his architecture which is hard to read. how do you understand a building which is a black glass, curbed screen. you don't quite know what's going on inside, and maybe that's norman, also." >> rose: i am pleased to have lord norman foster at this table for the first time. welcome. and it's abo