"Imagine. Design. Fabricate." Such is the tag line for the Hardesty Center for Fab Lab Tulsa. Fab Lab Tulsa, as it's commonly called, is -- per its website -- a nonprofit "entity that provides community access to advanced manufacturing and digital fabrication tools for learning skills, developing inventions, creating businesses, and producing personalized products. Fab Lab Tulsa is one of over 150 MIT-chartered Fab Labs in more than 40 countries and the first in the southeastern region of the United States.

"Ronan & Erwan Bouroullec --- Album" is a richly varied and lovely-to-look-at exhibition on view at the Philbrook Museum of Art here in Tulsa through May 11th. As we read of this show at the Philbrook website: "Design is a complex process in which numerous problems must be solved. Yet even in the age of computers, drawing remains an indispensable tool for many designers, allowing them to capture spontaneous ideas on paper and develop an individual formal language.

What makes for the creation of a structural or architectural icon? Is it strictly a matter of design? Or do both design and engineering play a role? And what about the location or environment surrounding a given structure --- how might they be involved? We explore such questions with our guest, Donald MacDonald, the noted bridge architect. Born in Canada and based for many years in San Francisco, MacDonald has designed high-rise buildings, landmark homes, and even an earthquake-proof bed.