Climate is changing. Parts of our world have been cooling. Rain belts and food-growing areas have shifted. People are starving. And we have been too slow to realize what is happening and why. In recent years, world climate changes have drawn more attention than at any other time in history. What we once called "crazy weather," just a few years ago, is now beginning to be seen as part of a logical and, in part, predictable pattern, an awesome natural force that we must deal with if man is to avoid disaster of unprecedented proportions.