　　In the 21st century, human beings are facing many serious problems, such as contamination of the environment, shortage of energy and food, a continuing explosion in population, and global warming. It is necessary to take immediate actions to avert impending crises and to assure a sustainable development of human society. What can we do and how can we contribute to the society as radio scientists?
　　Radio science has achieved a rapid development in the last century contributing to communications as symbolized by the trans-Atlantic transmission of radio signals by Marconi in 1901. Remote sensing of the ionosphere and the magnetosphere by radio waves have played an important role in expanding the space age, motivating radio and space scientists to explore the geospace plasma environment, heliosphere, and beyond.
　　Along with the progress of space exploration and utilization, radio science and signal processing techniques have played increasingly important roles in human activities such as the global positioning system (GPS) and Earth-observing systems in space. Microwave power transmission (MPT) has also been studied as a new application of radio science, and space solar power stations with MPT have been proposed as a solution to the energy crisis.
　　To review the past achievements and to discuss the future challenges to be made in the field of radio and space science for sustainable development of the human society, we would like to invite you to attend the Radio Science Symposium for A Sustainable Humanosphere at Kyoto University on 20-21 March 2006. The symposium consists of a series of lectures by leading radio scientists and space physicists and poster sessions consisting of invited and contributed papers presented in the associated workshops listed below.

15:00	Prof. A. Nishida(Executive Director, Graduate University for Advanced Studies and Former director of ISAS, Japan) “Prof. Matsumoto's Journey Across the World of Plasma Waves”
15:10	Prof. U. Inan(Former Commission H Chair of URSI, Stanford Univ., USA), “Lightning-induced Phenomena in the Humanosphere: Whistlers, Electron Precipitation, Sprites, Elves and Terrestrial Gamma Ray Flashes”
15:40	Prof. F. Lefeuvre (President of URSI, CNRS/LPCE, France), “TARANIS: a microsatellite project dedicated to the study of impulsive transfers of energy between the Earth atmosphere - ionosphere and magnetosphere”
16:10	Coffee Break
16:30	Prof. T. Mukai (Senior Chief Engineer, JAXA/ISAS, Japan), “Past and Future Perspectives of Space Plasma Observations in Japan”
17:00	Prof. T. Itoh(Former Commission D Chair of URSI, UCLA, USA) “Recent Advances in Retrodirective Technologies”
18:00	Poster Sessions

09:30	Prof. I. Kimura (Professor Emeritus of Kyoto University and Osaka Institute of Technology, Japan), “Japanese Contribution and International Friendly Relationship in the Research of Space Plasma Waves”
09:40	Dr. J.-L. Bougeret (Director of LESIA, CNRS/Observatoire de Paris, France) “Stereoscopic measurements of radio phenomena in the solar corona and interplanetary medium: improving the radio diagnostics for Space Weather predictions”
10:10	Prof. T. Sato (Director of Earth Simulator Center, JAMSTEC, Japan), “Large-Scale Predictive Simulations of Climate Change, Seismic Wave Propagation, Mantle Convection and Aurora Arc Formation using the Earth Simulator”
11:00	Dr. Y. Hirata (Chairman of the Board of Directors, KDDI R&D Laboratories Inc., Japan), “Evolution of Radio Communications toward Ubiquitous Network Society”
11:30	Prof. K. Schlegel (Past President of URSI, Max-Planck-Institut für Sonnensystemforschung, Katlenburg-Lindau, Germany) “URSI Science in the Humanosphere”
12:00	Prof. S. Kawai (Director of RISH, Kyoto Univ., Japan), “Research on Sustainable Humanosphere”