ADVANCE reports promise that science will be well shown at the great 1939 exhibitions in America- the Golden Gate International Exposition in San Francisco and the New York World's Fair (Science Service, Washington, D. C.). Synthetic foods will be manufactured on the spot, and laboratory rats will be fed upon the foods, and have to stand a comparative test against normally fed individuals. A complete 'chemical' garden growing indoors, without sunlight and without soil, will illustrate the production of maize, peas, melons, squash, spinach and lettuce by chemical means and ordinary incandescent lighting. Electrical apparatus, television, sound amplifying equipment, at which the visitor will be able to listen to the footsteps of insects, promise to enlighten the populace regarding the more spectacular aspects of scientific discovery. It is noteworthy that the site of the New York Fair, which used to be a dismal swamp outside Flushing, Long Island, has been converted into turf, suitable for planting the 10,000 trees taken to the place, by chemical treatment of the acid swamp soil.