In this interview Roald Hoffmann reveals aspects of his private life, from the great difficulties he experienced during World War II, to his personal beliefs. Hoffmann addresses questions about the meaning of laboratory work, teaching chemistry, representing chemical ideas, his philosophical quandaries, his poetry, and his view of atomic orbitals.…

Describes the life of Niels Bjerrum, a Danish physical chemist, best known as the originator of the concept that strong electrolytes are almost completely dissociated into ions in solution. (Author/JN)

Marion D. Francis and Rosemary L. Centner tell the story of a special group of compounds, developments at their home company, Procter and Gamble, and contributions by researchers in Europe and the U.S., in "The Development of Diphosphonates as Significant Health Care Products."

This column for high school teachers, written by high school teachers, discusses several interesting anecdotes related to the formulation of laws and the determination of constants. Science history is presented in a manner that can enliven classroom presentations and aid in understanding the principle itself. (Authur/SA)

Proposes that higher education insist more on the education of its chemists and less on strictly instrument training. Lists several instances where education may have been more useful than the strict training military officers received. Discusses the role of chemists in society. (MVL)