Rajesh Baby is currently associate professor and head of the department of mechanical engineering at St. Joseph's College of Engineering and Technology, Palai, Kerala, India. He has over 14 years of teaching experience. He pursued his doctoral studies at IIT Madras, under the guidance of Prof. C. Balaji. He has published nearly 50 papers in various international journals and conferences. His research areas include PCM-based heat sinks, heat pipes, and fuel cells. C. Balaji is currently professor in the department of mechanical engineering at the Indian Institute of Technology (IIT) Madras, Chennai, India. He has more than 180 peer-reviewed journal articles and 70 conference publications to his credit. He has authored four books. He is an elected fellow of the Indian National Academy of Engineering. He is currently the editor-in-chief of the International Journal of Thermal Sciences. His research interests include heat transfer, optimization, and atmospheric science.