Mathematician
Reason, and reason again
Architect and designer William McDonough asks what our buildings and products would look like if designers took into account "All children, all species, for all time." A tireless proponent of absolute sustainability (with a deadpan sense of humor), he explains his philosophy of "cradle to cradle" design, which bridge the needs of ecology and economics. He also shares some of his most inspiring work, including the world's largest green roof (at the Ford plant in Dearborn, Michigan), and the entire sustainable cities he's designing in China.
http://www.ted.com/index.php/talks/view/id/104
It's just slightly over twenty minutes long, but it's definately worth the wait. This guy is a visionary!
Architect William McDonough practices green architecture on a massive scale. In a 20-year project, he is redesigning Ford's city-sized River Rouge truck plant and turning it into the Rust Belt's eco-poster child, with the world's largest "living roof" for reclaiming storm runoff. He has created buildings that produce more energy and clean water than they use. Oh, and he's designing seven entirely new and entirely green cities in China.
Bottom-line economic benefits are another specialty of McDonough's practice. A tireless proponent of the idea that absolute sustainability and economic success can go hand-in-hand, he’s designed buildings for the Gap, Nike and Frito-Lay that have lowered corporate utility bills by capturing daylight for lighting, using natural ventilation instead of AC, and heating with solar or geothermal energy. They're also simply nicer places to work, surrounded by natural landscaping that gives back to the biosphere.