A micro-gravity working group at the Japan-US Science, Technology & Space Application Program (JUSTSAP) has sponsored a micro-gravity experiment, which was named as Japan-US Thermal Science Acceleration Project (JUSTSAP), performed on board the flight of the Space Shuttle, STS-95 in 1998. The project was successful in achiev­ ing the identification and promotion of greater cooperation between Japan and US mutual activities. In the JUSTSAP Wokshop '99, the micro-gravity working group has planned two research projects on STS-107 which are protein crystal growth experiments named as JUSPRO (Japan-U.S. Space Protein) and a student educational program as JUSTSAP S*T*A*R*S™. The flight of ST S- 107 is scheduled in the beginning of 2001. Several topics related to the future of JUSTSAP with a particular emphasis on the micro-gravity working group have been also discussed in the '99 Workshop such as (1) Involvement of Hawaiian Entities by direct contact with the University of Hawaii and the Space Grant Office, (2) Membership by seeking greater involvement of industry through the CSC's (NASA sponsored Commercial Space Centers), (3) International Space Policy through the invitation of an international expert on space, (4) Microgravity Working Group Activities by expanding the scope of activities to include the space life sciences area and student programs, etc. These topics will be discussed much in details in the coming 2000 Workshop.