With a passion for people-friendly design and an engineer's understanding of sustainability, Bill Caplan explored and photographed architecture on five continents from human and environmental perspectives. He devoted the past decade to reconciling the physical, sensible and operative manifestations of architecture, culminating in Buildings are for People: Human Ecological Design. Caplan's career has evolved from founding a multi-national sensor company engaged in diverse programs from the human genome to space exploration, which he headed for 34 years, to establishing a think-tank for the built environment. He holds a Master of Architecture from Pratt Institute and a Materials Engineering degree from Cornell.