The universe. Image tubes. Recording the fleeting days. The earth. The making of mountains. Life. Land and sea habitats. A revolucionary classification technique. Plant and animal communities. Plant life. The tratment of plants. Animal life. The animals of the zoo. Man. Exercise and rest. Health. Atomic medicines. A first-aid primer. Keeping fit. Progress in medicine. Matter and energy. Radiocarbon dating. If a nuclear weapon strikies. The field-ion microscope. Crystals at work for man. Atomic farming. Industry. Power-driven tolls. Industrial design. The rise of automation. Transportation. Space exploration. Supersonic flight. Communication. Microfilming. Photography at work. Science through the eges. Twentieth century (1895 - ). Projects and experiments. Ecology projects and experiments. Exploring the animal world. Selected readings in science. Scientific facts and figures. General outline. Alphabetical index.