Dr. Alireza Dehghani-Sanij is currently a Senior Research Fellow at the University of Waterloo, Canada. He studies energy issues such as energy sources, storage and conversion; stand-alone and hybrid renewable energy systems, specifically in geothermal contexts; and passive cooling systems. In a decade's academic and industrial experience, he has published over 30 papers in scientific journals and presented over 30 papers at conferences. He has also collaborated with other researchers to publish several books in both English and Farsi.Dr. Mehdi N. Bahadori is a Professor (Emeritus) of Mechanical Engineering at Sharif University of Technology, Iran. He has published and presented over 200 papers in scientific journals and at conferences, in both English and Farsi. He has also collaborated on some books in both languages, on energy, passive cooling systems, and engineering ethics. Among his scientific and professional memberships are ones in the American Society of Mechanical Engineers (ASME), the Iranian Society of Mechanical Engineers (ISME), and the Iranian Solar Energy Society.