Throughout his luminous career, Carl has championed the concept of sustainable stewardship. As an architect, preservation specialist, and sustainability advocate, he has pioneered design concepts that reflect a breakthrough combination of historic and environmental preservation. His commitment to sustainable practices is evident throughout his portfolio, ranging from iconic buildings to complex Modern-era structures. His work also includes heritage plans for campuses and multi-building sites. Carl believes that the imperative of sustainable, ethical stewardship applies to all types of historic structures. His leadership and ideas have challenged and advanced the architectural profession and enhanced the experience of all those who visit the buildings that he has helped modernize.