Dr Johann Bernhardt originally came to New Zealand, expecting to stay for a year. That was about 30 years ago. In that time, Johann has made his mark on the sustainable architecture landscape, producing an impressive portfolio of energy efficient homes, running the Auckland office of the Building Biology and Ecology Institute (BEE), lecturing sustainable design at the University of Auckland and producing the book 'A Deeper Shade of Green: Sustainable Urban Development Building and Architecture in New Zealand'.