Prof. Zekâi Sen is a researcher at the Civil Engineering Faculty, Istanbul Technical University, Turkey. He has worked in various countries and in different faculties, such as earth sciences, hydrogeology, astronautics and aeronautics, and meteorology. His main interests are hydrology, water resources, hydrogeology, hydrometeorology, hydraulics, philosophy of science, and history, and he has acted as a national and international consultant on water resources, renewable energy alternatives, earthquake engineering, earth sciences, and similar projects. Prof. Sen has written several in English: Wadi Hydrology (2008, CRC Lewis Publishers), Solar Energy Fundamentals and Modeling Techniques (2008, Springer), Spatial Modeling Principles in Earth Sciences (2009, Springer). He is the recipient of various national and international scientific prizes, including from the Science and Technology Center of Turkey and King Abdulaziz University, Saudi Arabia; from 2002 to 2007 he contributed to the IPCC, a period that culminated in the award of the Nobel Peace Prize to the IPCC.