AGE: 71
OCCUPATION: Architect
PREVIOUS APPEARANCES ON THE TIME 100: 1
PRO: The Italian master known for his vibrant, forward-thinking designs remains in high demand worldwide, with new works this year in Chicago and Athens. And his New York Times Building, with its striking curtain wall, is a hit with unwanted skyscraper climbers.
CON: The recession could force him to scale back some of his more ambitious plans.