Dipl. Ing. Dr. techn. Horst Felsch, Chemist, Fieberbrunn, Austria INTRODUCTION Two American researchers received the Nobel Prize for chemistry in October 2003: Peter Agre of Johns Hopkins University in Baltimore for discovering water channels in the cell wall and Roderick MacKinnon of Rockefeller Uni-versity in New York for structural and mechanistic studies of potassium ion […]