The Session announces a half-day session during the IAGA Assembly held in Hanoi/Vietnam. The session is open for oral lectures and posters. The topics are the development of solar-terrestrial physics, space physics and related disciplines during the last decades. It welcomes paper/posters as biographical notes, research programs, international cooperation, including all aspects of the problems of a general history of geosciences and its related disciplines (physics, astronomy, geography, and meteorology). For further information contact: Dr. Wilfried Schroder, Hechelstrasse 8, D-28777, Bremen, Germany.