Dr. Zekai Sen obtained his B. Sc. and M. Sc Degrees from the Technical University of Istanbul, Civil Engineering Faculty, in 1972. His post-graduate studies were carried out at the University of London, Imperial College of Science and Technology. He was granted a Diploma of Imperial College (DIC) in 1972, M. Sc. in Engineering Hydrology in 1973 and his Ph. D. in stochastic hydrology in 1974. He worked in different countries such as England, Norway, Saudi Arabia and Turkey. He worked in different universities such as the King Abdulaziz University, Faculty of Earth Sciences, Hydrogeology Department; Istanbul Technical University, Faculty of Astronautics and Aeronautics, Meteorology Department. His main interests are hydrology, water resources, hydrogeology, atmospheric sciences, hydrometeorology, hydraulics, science philosophy and history. He has published about 230 SCI scientific papers in different international top journals and has seven book publications, including the forthcoming Practical and Applied Hydrogeology (2014).