This volume contains the papers presented during the Energy Session of the first Orbis Scientiae of the Center for Theoretical Studies, University of Miami, Coral Gables, Florida. With this first Orbis, which met January 7- 11, 1974, the Center for Theoretical Studies has inaugurated a new series of annual gather- ings devoted to the natural sciences and to problems on the "interface" of science and society. This volume contains, in addition, a contribution...