Its open to 401k/403b investors who have access to that fund; mine used to.
Depends on what you consider an emerging market. The fund primarily invests in the US and western europe. It has about 13% in mexico, central and south america, and the APAC region including china and india. Not much if anything in eastern europe, the Former Soviet states, or Japan. About 5.5% is in the americas from mexico and south (most of it is in brazil), and 7.5% is in the APAC region, about 1/3 of that in south korea.