John F. Henahan

Each day brings new discoveries, most of them alarming, about chemical poisoning in the food we eat, the clothes we wear, the air we breathe, and the manufacturing procedures we depend upon. Are we victims of crisis overkill, or are the dangers all too real? A report on the status of environmental crises, past and present.

Binary weapons are a "quantum jump in safety," says the Army. They are a quantum jump in the danger of a boom in do-it-yourself chemical weapons, say the Army's critics.