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Show What's New? Government engineers are trying to develop a light weight concrete for floors of long bridge spans. An air-cooling system similar to that used in theatres is being installed in-stalled in an Italian steamship. Diesel engines will be chiefly used in airplanes of the future, according to predictions by engineers. Experiments begun by scientists in an effort to produce superior beef cattle are expected to take 25 years for completion. A devce for electric stimulation of the heart in case of failure of that organ has been developed by an Australian specialist. A new "noiseless brick" for street paving has been produced by a Pittsburgh manufacturer. |