Since C.P. Snow coined the ‘Two Cultures,’ we are periodically reminded that somehow we must throw bridges across the gap—or gulf?—between the sciences and humanities. Much of this literature belabors the scientific naivete of the general public; others, like this one, pay attention to the importance of the humanities as helpers of our understanding of the world. Stephen Schneider and Lynne Morton have written a readable account, somewhat erudite in passages, somewhat over simple in other places, of the different ways of looking at the physical world. Aimed at both the scientist and the humanist as well as the general public, it explores some of the scientific issues of today that are of overwhelming importance to the well being of people threatened by pollution, climate alteration, and depletion of natural resources.