Our working language is English. About half of the staff are non-Swedes and we recruit researchers from all cor- ners of the globe. Post-doctoral fellows have the most diverse nationalities, but our group leaders, and both graduate and undergraduate students also represent many nations. Consequently, the structure of employed staff and students at UPSC is highly dynamic and represents about 35 nationalities.

UPSC works to facilitate the international networking life- style which characterise today’s top scientists. The iUPSC welcome platform provides services and support for our visitors and foreign employees, covering housing, work permits, bank contacts, social activities, etc. This service is probably one important reason why UPSC in 2005 was elected the best place to work for postdocs outside the US. The web page is an open source environment for future, present and past UPSC employees and visitors. Apart from containing practical information, the web page is also a virtual meeting place where UPSC associates may exchange information, stay in touch, and develop new collaboration opportunities.