Göran Grimvall received his Ph.D. in solid-state theory in 1969 from Chalmers University of Technology, Gothenburg. Since 1977, he has been full professor of theoretical physics at the Royal Institute of Technology, Stockholm. He is a member of the Royal Swedish Academy of Engineering Sciences and the author of many books, both on popular physics and on solid-state physics. Among them Thermophysical Properties of Materials (North-Holland, 1999). His areas of interest include thermal and transport properties of metals and alloys.