The science program of UNESCO is government not only by UNESCO's General Conference and Executive Board, but by a number of intergovernmental councils that deal with specific programs. The United States, due to its 19 year absence from UNESCO, is not represented in many of these bodies. In the 33rd General Conference, the United States was nominated only for the Intergovernmental Council of the International Hydrological Program, and failed to be elected to that position.
I recommend that the U.S. scientific community work with the U.S. National Commission for UNESCO and the Department of State to elect U.S. representatives to other, appropriate UNESCO scientific councils.
To help in that effort, I am beginning a series of short postings in this blog about the scientific programs of UNESCO and their governance.