Complex sentence: He is the founder president of the Asian Seismological Commission and presided over the commission from 1996 to 2000 and has served as an advisor and consultant to the Commonwealth Science Council, UNESCO, International Atomic Energy Agency (IAEA) and the International Council for Science.
Split into simpler sentences: He is the founder president of the Asian Seismological Commission and presided over the commission from 1996 to 2000. He has served as an advisor and consultant to the Commonwealth Science Council, UNESCO, International Atomic Energy Agency (IAEA) and the International Council for Science.