The United Nations University Institute for Advanced Studies (located in Yokohama, Japan) offers several Ph.D. and Postdoctoral Fellowships for research in the fields of Biodiplomacy, Sustainable Development Governance, Science Policy for Sustainable Development, Ecosystems and People.
The deadline for applications is 12 May 2006.
For more information and application forms:
http://www.ias.unu.edu/fellowships/apply.cfm

Another Postdoctoral Fellowship Program is offered by the Japan Society for the Promotion of Science:
http://www.jsps.go.jp/english/e-fellow/guideline.htm