Jack Zunz, 94, Engineer Who Made Sydney Opera House Happen

When preparing for construction of architect Jørn Utzon’s design, the Opera House’s original lead engineer could not get his structural calculations for the now-famous roof to work out, and he quit; Zunz took over and used then-new computer modeling techniques to solve the engineering puzzle. And when, during the cost-overrun-plagued construction, Utzon got tired of fighting with politicians and walked away from the project, Zunz saw it through to the end. — The Guardian