The International Control of Disarmament
The widely acknowledged need for a separate United Nations agency-responsible for verifying and controlling disarmament agreements is intensified by the current impasse In bilateral "summit" talks
The widely acknowledged need for a separate United Nations agency-responsible for verifying and controlling disarmament agreements is intensified by the current impasse In bilateral "summit" talks
An emission nebula is a cloud of interstellar gas that shines by its own light. Each kind of ion in it has a characteristic color, and three-color photography reveals how the ions are distributed
The hairlike organelles that propel swimming cells or move liquids over fixed cells are composed of sheaves of nlicrotubules. The cilia beat when the microtubules, powered by ATP, slide past one another
Life requires nitrogen that has been "fixed" through combination with other elements. Thermodynamics imposes a constraint on all possible methods of fixation: invariably energy must be supplied
From antiquity to modern times stairways have been built by rules of thumb. A study of how people move and expend energy in going up and downstairs suggests a more rational approach to their design
The sequence of events in the nervous system that coordinates the movements of the eyes and the head in firating a visual target has been clarified by recent experiments with monkeys